1
|
Koike M, Hatano T, Pirozhkov AS, Ueno Y, Terauchi M. Design of soft x-ray varied-line-spacing (VLS) high-dispersion laminar-type grating coated with super-mirror-type (SMT) multilayer for flat-field spectrograph in a region of 2-4 keV. Rev Sci Instrum 2024; 95:023102. [PMID: 38421260 DOI: 10.1063/5.0173068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 02/04/2024] [Indexed: 03/02/2024]
Abstract
A soft x-ray varied-line-spacing (VLS) laminar-type spherical grating with a super-mirror-type (SMT) multilayer was designed for a soft x-ray high resolution flat-field spectrograph in a region of 2-4 keV. The effective groove density of the designed VLS grating is 3200 lines/mm, and the local groove density varies from 2700 to 3866 lines/mm. The geometrical imaging property was evaluated by numerical calculations. The resolving power estimated by means of ray tracing was up to ∼103. For the evaluation of diffraction efficiency, the SMT multilayer structure designed for 3200 lines/mm in our previous work, Koike et al., Rev. Sci. Instrum. 94, 045109 (2023), was employed, and the numerical calculation was performed considering the local groove density of VLS grooves and the local incidence angle being affected by the curvature of the spherical surface and the geometrical relation between the source and incidence point on the grating. The results showed that the SMT multilayer-coated grating exhibited about an order of magnitude higher diffraction efficiency compared with an Au-coated grating.
Collapse
Affiliation(s)
- M Koike
- Kansai Institute for Photon Science (KPSI), Foundational Quantum Technology Research Directorate, National Institutes for Quantum Science and Technology (QST), Kizugawa, Kyoto 619-0215, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai, Miyagi 980-8577, Japan
- Department of Chemical Biology, Graduate School of Engineering, Osaka Metropolitan University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - T Hatano
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - A S Pirozhkov
- Kansai Institute for Photon Science (KPSI), Foundational Quantum Technology Research Directorate, National Institutes for Quantum Science and Technology (QST), Kizugawa, Kyoto 619-0215, Japan
| | - Y Ueno
- Technology Research Laboratory, Shimadzu Corp., Seika-chou, Kyoto 619-0237, Japan
| | - M Terauchi
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai, Miyagi 980-8577, Japan
| |
Collapse
|
2
|
Murano T, Koshiya S, Koike M, Hatano T, Pirozhkov AS, Kakio T, Hayashi N, Oue Y, Konishi K, Nagano T, Kondo K, Terauchi M. Laminar-type gratings overcoated with carbon-based materials to enhance analytical sensitivity of flat-field emission spectrograph in the VUV region. Rev Sci Instrum 2023; 94:125113. [PMID: 38156956 DOI: 10.1063/5.0176783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 12/04/2023] [Indexed: 01/03/2024]
Abstract
Laminar-type spherical diffraction gratings overcoated with carbon-based materials were designed, fabricated, and evaluated for the purpose of enhancing the analytical sensitivity of the flat-field spectrograph in a vacuum ultraviolet region of 35-110 eV. As the design benchmark for numerical calculations, diffraction efficiency (DE) and spectral flux, which are defined by the product of the DE and numerical aperture and correlate with the analytical sensitivity of the spectrograph, were used. To simplify the feasibility study on the overcoating effects, we assumed a laminar-type grating having a grating constant of 1/1000 mm and coated with a Au layer of 30.0 nm thickness and an incidence angle of 84.0°. The optimized groove depth and duty ratio were 30.0 nm and 0.3, respectively. In addition, the optimum thicknesses of the overcoating layer were 44, 46, 24, and 30 nm for B4C, C, diamond-like-carbon, and SiC, respectively. Based on these results, we have fabricated a varied-line-spacing holographic grating overcoated with B4C with a thickness of 47 nm. For the experimental evaluation, we used the light source of Mg-L and Al-L emissions excited by the electron beam generated from an electron microscope, an objective flat-field spectrograph, and a CCD imaging detector. The experimental results showed that the spectrograph employing a new grating overcoated with the B4C layer indicated almost the same spectral resolution and 2.9-4.2 times higher analytical sensitivity compared with those obtained with a previously designed Au-coated grating having a grating constant of 1/1200 mm and used at an incidence of 86.0°.
Collapse
Affiliation(s)
- T Murano
- SA Business Unit, JEOL Ltd., Akishima, Tokyo 196-8558, Japan
| | - S Koshiya
- SA Business Unit, JEOL Ltd., Akishima, Tokyo 196-8558, Japan
| | - M Koike
- Kansai Institute for Photon Science, Foundational Quantum Technology Research Directorate, National Institutes for Quantum Science and Technology, Kyoto 619-0215, Japan
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi 980-8577, Japan
- Department of Chemical Biology, Graduate School of Engineering, Osaka Metropolitan University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - T Hatano
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - A S Pirozhkov
- Kansai Institute for Photon Science, Foundational Quantum Technology Research Directorate, National Institutes for Quantum Science and Technology, Kyoto 619-0215, Japan
| | - T Kakio
- Device Department, Shimadzu Corp., Nakagyo-ku, Kyoto 604-8511, Japan
| | - N Hayashi
- Device Department, Shimadzu Corp., Nakagyo-ku, Kyoto 604-8511, Japan
| | - Y Oue
- Device Department, Shimadzu Corp., Nakagyo-ku, Kyoto 604-8511, Japan
| | - K Konishi
- Device Department, Shimadzu Corp., Nakagyo-ku, Kyoto 604-8511, Japan
| | - T Nagano
- Device Department, Shimadzu Corp., Nakagyo-ku, Kyoto 604-8511, Japan
| | - K Kondo
- Kansai Institute for Photon Science, Foundational Quantum Technology Research Directorate, National Institutes for Quantum Science and Technology, Kyoto 619-0215, Japan
| | - M Terauchi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi 980-8577, Japan
| |
Collapse
|
3
|
Armstrong CD, Neely D, Kumar D, McKenna P, Gray RJ, Pirozhkov AS. Deconvolution of multi-Boltzmann x-ray distribution from linear absorption spectrometer via analytical parameter reduction. Rev Sci Instrum 2021; 92:113102. [PMID: 34852528 DOI: 10.1063/5.0057486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Accurate characterization of incident radiation is a fundamental challenge for diagnostic design. Herein, we present an efficient spectral analysis routine that is able to characterize multiple components within the spectral emission by analytically reducing the number of parameters. The technique is presented alongside the design of a hard x-ray linear absorption spectrometer using the example of multiple Boltzmann-like spectral distributions; however, it is generally applicable to all absorption based spectrometer designs and can be adapted to any incident spectral shape. This routine is demonstrated to be tolerable to experimental noise and suitable for real-time data processing at multi-Hz repetition rates.
Collapse
Affiliation(s)
- C D Armstrong
- Central Laser Facility, Rutherford Appleton Laboratory, Harwell OX110QX, United Kingdom
| | - D Neely
- Central Laser Facility, Rutherford Appleton Laboratory, Harwell OX110QX, United Kingdom
| | - D Kumar
- Department of Radiation and Chemical Physics, Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 18221 Prague 8, Czechia
| | - P McKenna
- SUPA Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom
| | - R J Gray
- SUPA Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom
| | - A S Pirozhkov
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
| |
Collapse
|
4
|
Dover NP, Nishiuchi M, Sakaki H, Kondo K, Alkhimova MA, Faenov AY, Hata M, Iwata N, Kiriyama H, Koga JK, Miyahara T, Pikuz TA, Pirozhkov AS, Sagisaka A, Sentoku Y, Watanabe Y, Kando M, Kondo K. Effect of Small Focus on Electron Heating and Proton Acceleration in Ultrarelativistic Laser-Solid Interactions. Phys Rev Lett 2020; 124:084802. [PMID: 32167312 DOI: 10.1103/physrevlett.124.084802] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
Acceleration of particles from the interaction of ultraintense laser pulses up to 5×10^{21} W cm^{-2} with thin foils is investigated experimentally. The electron beam parameters varied with decreasing spot size, not just laser intensity, resulting in reduced temperatures and divergence. In particular, the temperature saturated due to insufficient acceleration length in the tightly focused spot. These dependencies affected the sheath-accelerated protons, which showed poorer spot-size scaling than widely used scaling laws. It is therefore shown that maximizing laser intensity by using very small foci has reducing returns for some applications.
Collapse
Affiliation(s)
- N P Dover
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - M Nishiuchi
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
- PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - H Sakaki
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - Ko Kondo
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - M A Alkhimova
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia
| | - A Ya Faenov
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia
- Open and Transdisciplinary Research Initiative, Osaka University, Suita, Osaka 565-0871, Japan
| | - M Hata
- Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - N Iwata
- Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - H Kiriyama
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - J K Koga
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - T Miyahara
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
| | - T A Pikuz
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia
- Open and Transdisciplinary Research Initiative, Osaka University, Suita, Osaka 565-0871, Japan
| | - A S Pirozhkov
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - A Sagisaka
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - Y Sentoku
- Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Y Watanabe
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
| | - M Kando
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - K Kondo
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| |
Collapse
|
5
|
Dover NP, Nishiuchi M, Sakaki H, Alkhimova MA, Faenov AY, Fukuda Y, Kiriyama H, Kon A, Kondo K, Nishitani K, Ogura K, Pikuz TA, Pirozhkov AS, Sagisaka A, Kando M, Kondo K. Scintillator-based transverse proton beam profiler for laser-plasma ion sources. Rev Sci Instrum 2017; 88:073304. [PMID: 28764503 DOI: 10.1063/1.4994732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A high repetition rate scintillator-based transverse beam profile diagnostic for laser-plasma accelerated proton beams has been designed and commissioned. The proton beam profiler uses differential filtering to provide coarse energy resolution and a flexible design to allow optimisation for expected beam energy range and trade-off between spatial and energy resolution depending on the application. A plastic scintillator detector, imaged with a standard 12-bit scientific camera, allows data to be taken at a high repetition rate. An algorithm encompassing the scintillator non-linearity is described to estimate the proton spectrum at different spatial locations.
Collapse
Affiliation(s)
- N P Dover
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - M Nishiuchi
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - H Sakaki
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - M A Alkhimova
- National Research Nuclear University (MEPhI), Moscow 115409, Russia
| | - A Ya Faenov
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia
| | - Y Fukuda
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - H Kiriyama
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - A Kon
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - K Kondo
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - K Nishitani
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - K Ogura
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - T A Pikuz
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia
| | - A S Pirozhkov
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - A Sagisaka
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - M Kando
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| | - K Kondo
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
| |
Collapse
|
6
|
Faenov AY, Colgan J, Hansen SB, Zhidkov A, Pikuz TA, Nishiuchi M, Pikuz SA, Skobelev IY, Abdallah J, Sakaki H, Sagisaka A, Pirozhkov AS, Ogura K, Fukuda Y, Kanasaki M, Hasegawa N, Nishikino M, Kando M, Watanabe Y, Kawachi T, Masuda S, Hosokai T, Kodama R, Kondo K. Nonlinear increase of X-ray intensities from thin foils irradiated with a 200 TW femtosecond laser. Sci Rep 2015; 5:13436. [PMID: 26330230 PMCID: PMC4557088 DOI: 10.1038/srep13436] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 07/27/2015] [Indexed: 11/09/2022] Open
Abstract
We report, for the first time, that the energy of femtosecond optical laser pulses, E, with relativistic intensities I > 10(21) W/cm(2) is efficiently converted to X-ray radiation, which is emitted by "hot" electron component in collision-less processes and heats the solid density plasma periphery. As shown by direct high-resolution spectroscopic measurements X-ray radiation from plasma periphery exhibits unusual non-linear growth ~E(4-5) of its power. The non-linear power growth occurs far earlier than the known regime when the radiation reaction dominates particle motion (RDR). Nevertheless, the radiation is shown to dominate the kinetics of the plasma periphery, changing in this regime (now labeled RDKR) the physical picture of the laser plasma interaction. Although in the experiments reported here we demonstrated by observation of KK hollow ions that X-ray intensities in the keV range exceeds ~10(17) W/cm(2), there is no theoretical limit of the radiation power. Therefore, such powerful X-ray sources can produce and probe exotic material states with high densities and multiple inner-shell electron excitations even for higher Z elements. Femtosecond laser-produced plasmas may thus provide unique ultra-bright X-ray sources, for future studies of matter in extreme conditions, material science studies, and radiography of biological systems.
Collapse
Affiliation(s)
- A Ya Faenov
- Institute for Academic Initiatives, Osaka University, Suita, Osaka, 565-0871, Japan.,Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia
| | - J Colgan
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - S B Hansen
- Sandia National Laboratories, Albuquerque, New Mexico 87123, USA
| | - A Zhidkov
- PPC and Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - T A Pikuz
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia.,PPC and Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - M Nishiuchi
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - S A Pikuz
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia.,National Research Nuclear University (MEPhI), Moscow 115409, Russia
| | - I Yu Skobelev
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia.,National Research Nuclear University (MEPhI), Moscow 115409, Russia
| | - J Abdallah
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - H Sakaki
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A Sagisaka
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A S Pirozhkov
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - K Ogura
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - Y Fukuda
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - M Kanasaki
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - N Hasegawa
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - M Nishikino
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - M Kando
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - Y Watanabe
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Japan
| | - T Kawachi
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - S Masuda
- PPC and Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - T Hosokai
- PPC and Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - R Kodama
- Institute for Academic Initiatives, Osaka University, Suita, Osaka, 565-0871, Japan.,PPC and Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - K Kondo
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| |
Collapse
|
7
|
Nishiuchi M, Sakaki H, Maeda S, Sagisaka A, Pirozhkov AS, Pikuz T, Faenov A, Ogura K, Kanasaki M, Matsukawa K, Kusumoto T, Tao A, Fukami T, Esirkepov T, Koga J, Kiriyama H, Okada H, Shimomura T, Tanoue M, Nakai Y, Fukuda Y, Sakai S, Tamura J, Nishio K, Sako H, Kando M, Yamauchi T, Watanabe Y, Bulanov SV, Kondo K. Multi-charged heavy ion acceleration from the ultra-intense short pulse laser system interacting with the metal target. Rev Sci Instrum 2014; 85:02B904. [PMID: 24593609 DOI: 10.1063/1.4827111] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Experimental demonstration of multi-charged heavy ion acceleration from the interaction between the ultra-intense short pulse laser system and the metal target is presented. Al ions are accelerated up to 12 MeV/u (324 MeV total energy). To our knowledge, this is far the highest energy ever reported for the case of acceleration of the heavy ions produced by the <10 J laser energy of 200 TW class Ti:sapphire laser system. Adding to that, thanks to the extraordinary high intensity laser field of ∼10(21) W cm(-2), the accelerated ions are almost fully stripped, having high charge to mass ratio (Q/M).
Collapse
Affiliation(s)
- M Nishiuchi
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - H Sakaki
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - S Maeda
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A Sagisaka
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A S Pirozhkov
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Pikuz
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A Faenov
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - K Ogura
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - M Kanasaki
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - K Matsukawa
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Kusumoto
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A Tao
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Fukami
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Esirkepov
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - J Koga
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - H Kiriyama
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - H Okada
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Shimomura
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - M Tanoue
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - Y Nakai
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - Y Fukuda
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - S Sakai
- Japan Atomic Energy Agency, Tokai, Ibaragi, Japan
| | - J Tamura
- J-PARC Center, Tokai, Ibaragi, Japan
| | - K Nishio
- Japan Atomic Energy Agency, Tokai, Ibaragi, Japan
| | - H Sako
- Japan Atomic Energy Agency, Tokai, Ibaragi, Japan
| | - M Kando
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Yamauchi
- Graduate School of Maritime Science, Kobe University, 5-1-1 Fukaeminami-machi, Higashinada-ku, Kobe 658-0022, Japan
| | - Y Watanabe
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, Japan
| | - S V Bulanov
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - K Kondo
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| |
Collapse
|
8
|
Sakaki H, Nishiuchi M, Maeda S, Sagisaka A, Pirozhkov AS, Pikuz T, Faenov A, Ogura K, Fukami T, Matsukawa K, Kanasaki M, Fukuda Y, Yogo A, Esirkepov T, Kiriyama H, Shimomura T, Nakai Y, Tanoue M, Torimoto K, Okamoto M, Sato T, Niita K, Tamura J, Nishio K, Sako H, Yamauchi T, Watanabe Y, Bulanov S, Kondo K. Measurements of electron-induced neutrons as a tool for determination of electron temperature of fast electrons in the task of optimization laser-produced plasma ions acceleration. Rev Sci Instrum 2014; 85:02A705. [PMID: 24593439 DOI: 10.1063/1.4825154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
High intensity laser-plasma interaction has attracted considerable interest for a number of years. The laser-plasma interaction is accompanied by generation of various charged particle beams, such as high-energy proton and ions with high charge to mass ratio (Q/M; same as multi-charged ions). Results of simultaneous novel measurements of electron-induced photonuclear neutrons (photoneutron), which are a diagnostic of the laser-plasma interaction, are proposed to use for optimization of the laser-plasma ion generation. The proposed method is demonstrated by the laser irradiation with the intensity of 1 × 10(21) W/cm(2) on the metal foil target. The photoneutrons are measured by using NE213 liquid scintillation detectors. Heavy-ion signal is registered with the CR-39 track detector simultaneously. The measured signals of the electron-induced photoneutrons are well reproduced by using the Particle and Heavy Ion Transport code System. The results obtained provide useful approach for analyzing the various laser based ion beams.
Collapse
Affiliation(s)
- H Sakaki
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - M Nishiuchi
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - S Maeda
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A Sagisaka
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | | | - T Pikuz
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A Faenov
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - K Ogura
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Fukami
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - K Matsukawa
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - M Kanasaki
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - Y Fukuda
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A Yogo
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Esirkepov
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - H Kiriyama
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Shimomura
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - Y Nakai
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - M Tanoue
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - K Torimoto
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - M Okamoto
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Sato
- Japan Atomic Energy Agency, Tokai, Ibaragi, Japan
| | - K Niita
- Research Organization for Information Science and Technology, Tokai, Ibaragi, Japan
| | - J Tamura
- J-PARC Center, Tokai, Ibaragi, Japan
| | - K Nishio
- Japan Atomic Energy Agency, Tokai, Ibaragi, Japan
| | - H Sako
- Japan Atomic Energy Agency, Tokai, Ibaragi, Japan
| | - T Yamauchi
- Graduate School of Maritime Sciences, Kobe University, Japan
| | - Y Watanabe
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Japan
| | - S Bulanov
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - K Kondo
- Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| |
Collapse
|
9
|
Pirozhkov AS, Kando M, Esirkepov TZ, Gallegos P, Ahmed H, Ragozin EN, Faenov AY, Pikuz TA, Kawachi T, Sagisaka A, Koga JK, Coury M, Green J, Foster P, Brenner C, Dromey B, Symes DR, Mori M, Kawase K, Kameshima T, Fukuda Y, Chen L, Daito I, Ogura K, Hayashi Y, Kotaki H, Kiriyama H, Okada H, Nishimori N, Imazono T, Kondo K, Kimura T, Tajima T, Daido H, Rajeev P, McKenna P, Borghesi M, Neely D, Kato Y, Bulanov SV. Soft-x-ray harmonic comb from relativistic electron spikes. Phys Rev Lett 2012; 108:135004. [PMID: 22540709 DOI: 10.1103/physrevlett.108.135004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2011] [Indexed: 05/31/2023]
Abstract
We demonstrate a new high-order harmonic generation mechanism reaching the "water window" spectral region in experiments with multiterawatt femtosecond lasers irradiating gas jets. A few hundred harmonic orders are resolved, giving μJ/sr pulses. Harmonics are collectively emitted by an oscillating electron spike formed at the joint of the boundaries of a cavity and bow wave created by a relativistically self-focusing laser in underdense plasma. The spike sharpness and stability are explained by catastrophe theory. The mechanism is corroborated by particle-in-cell simulations.
Collapse
Affiliation(s)
- A S Pirozhkov
- Advanced Beam Technology Division, JAEA, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Zhang Z, Nishikino M, Nishimura H, Kawachi T, Pirozhkov AS, Sagisaka A, Orimo S, Ogura K, Yogo A, Okano Y, Ohshima S, Fujioka S, Kiriyama H, Kondo K, Shimomura T, Kanazawa S. Efficient multi-keV x-ray generation from a high-Z target irradiated with a clean ultra-short laser pulse. Opt Express 2011; 19:4560-4565. [PMID: 21369288 DOI: 10.1364/oe.19.004560] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Kα line emissions from Mo and Ag plates were experimentally studied using clean, ultrahigh-intensity femtosecond laser pulses. The absolute yields of Kα x-rays at 17 keV from Mo and 22 keV from Ag were measured as a function of the laser pulse contrast ratio and irradiation intensity. Significantly enhanced Kα yields were obtained for both Mo and Ag by employing high contrast ratios and irradiances. Conversion efficiencies of 4.28×10⁻⁵/sr for Mo and 4.84×10⁻⁵/sr for Ag, the highest values obtained to date, were demonstrated with contrast ratios in the range 10⁻¹⁰ to 10⁻¹¹.
Collapse
Affiliation(s)
- Z Zhang
- Institute of Laser Engineering, Osaka University, Osaka, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Kando M, Pirozhkov AS, Kawase K, Esirkepov TZ, Fukuda Y, Kiriyama H, Okada H, Daito I, Kameshima T, Hayashi Y, Kotaki H, Mori M, Koga JK, Daido H, Faenov AY, Pikuz T, Ma J, Chen LM, Ragozin EN, Kawachi T, Kato Y, Tajima T, Bulanov SV. Enhancement of photon number reflected by the relativistic flying mirror. Phys Rev Lett 2009; 103:235003. [PMID: 20366154 DOI: 10.1103/physrevlett.103.235003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2009] [Revised: 08/30/2009] [Indexed: 05/29/2023]
Abstract
Laser light reflection by a relativistically moving electron density modulation (flying mirror) in a wake wave generated in a plasma by a high intensity laser pulse is investigated experimentally. A counterpropagating laser pulse is reflected and upshifted in frequency with a multiplication factor of 37-66, corresponding to the extreme ultraviolet wavelength. The demonstrated flying mirror reflectivity (from 3 x 10(-6) to 2 x 10(-5), and from 1.3 x 10(-4) to 0.6 x 10(-3), for the photon number and pulse energy, respectively) is close to the theoretical estimate for the parameters of the experiment.
Collapse
Affiliation(s)
- M Kando
- Advanced Photon Research Center, JAEA, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Kotaki H, Daito I, Kando M, Hayashi Y, Kawase K, Kameshima T, Fukuda Y, Homma T, Ma J, Chen LM, Esirkepov TZ, Pirozhkov AS, Koga JK, Faenov A, Pikuz T, Kiriyama H, Okada H, Shimomura T, Nakai Y, Tanoue M, Sasao H, Wakai D, Matsuura H, Kondo S, Kanazawa S, Sugiyama A, Daido H, Bulanov SV. Electron optical injection with head-on and countercrossing colliding laser pulses. Phys Rev Lett 2009; 103:194803. [PMID: 20365929 DOI: 10.1103/physrevlett.103.194803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2008] [Indexed: 05/29/2023]
Abstract
A high stability electron bunch is generated by laser wakefield acceleration with the help of a colliding laser pulse. The wakefield is generated by a laser pulse; the second laser pulse collides with the first pulse at 180 degrees and at 135 degrees realizing optical injection of an electron bunch. The electron bunch has high stability and high reproducibility compared with single pulse electron generation. In the case of 180 degrees collision, special measures have been taken to prevent damage. In the case of 135 degrees collision, since the second pulse is countercrossing, it cannot damage the laser system.
Collapse
Affiliation(s)
- H Kotaki
- Advanced Photon Research Center, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Fukuda Y, Faenov AY, Tampo M, Pikuz TA, Nakamura T, Kando M, Hayashi Y, Yogo A, Sakaki H, Kameshima T, Pirozhkov AS, Ogura K, Mori M, Esirkepov TZ, Koga J, Boldarev AS, Gasilov VA, Magunov AI, Yamauchi T, Kodama R, Bolton PR, Kato Y, Tajima T, Daido H, Bulanov SV. Energy increase in multi-MeV ion acceleration in the interaction of a short pulse laser with a cluster-gas target. Phys Rev Lett 2009; 103:165002. [PMID: 19905702 DOI: 10.1103/physrevlett.103.165002] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2009] [Indexed: 05/28/2023]
Abstract
An approach for accelerating ions, with the use of a cluster-gas target and an ultrashort pulse laser of 150-mJ energy and 40-fs duration, is presented. Ions with energy 10-20 MeV per nucleon having a small divergence (full angle) of 3.4 degrees are generated in the forward direction, corresponding to approximately tenfold increase in the ion energies compared to previous experiments using solid targets. It is inferred from a particle-in-cell simulation that the high energy ions are generated at the rear side of the target due to the formation of a strong dipole vortex structure in subcritical density plasmas.
Collapse
Affiliation(s)
- Y Fukuda
- Kansai Photon Science Institute and Photo-Medical Research Center, JAEA, Kyoto, 615-0215 Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Esirkepov TZ, Bulanov SV, Kando M, Pirozhkov AS, Zhidkov AG. Boosted high-harmonics pulse from a double-sided relativistic mirror. Phys Rev Lett 2009; 103:025002. [PMID: 19659215 DOI: 10.1103/physrevlett.103.025002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2009] [Indexed: 05/28/2023]
Abstract
An ultrabright high-power x- and gamma-radiation source is proposed. A high-density thin plasma slab, accelerating in the radiation pressure dominant regime by an ultraintense electromagnetic wave, reflects a counterpropagating relativistically strong electromagnetic wave, producing extremely time-compressed and intensified radiation. The reflected light contains relativistic harmonics generated at the plasma slab, all upshifted with the same factor as the fundamental mode of the incident light. The theory of an arbitrarily moving thin plasma slab reflectivity is presented.
Collapse
Affiliation(s)
- T Zh Esirkepov
- Kansai Photon Science Institute, JAEA, Kizugawa, Kyoto 619-0215, Japan
| | | | | | | | | |
Collapse
|
15
|
Choi IW, Kim CM, Sung JH, Yu TJ, Lee SK, Kim IJ, Jin YY, Jeong TM, Hafz N, Pae KH, Noh YC, Ko DK, Yogo A, Pirozhkov AS, Ogura K, Orimo S, Sagisaka A, Nishiuchi M, Daito I, Oishi Y, Iwashita Y, Nakamura S, Nemoto K, Noda A, Daido H, Lee J. Ion spectrometer composed of time-of-flight and Thomson parabola spectrometers for simultaneous characterization of laser-driven ions. Rev Sci Instrum 2009; 80:053302. [PMID: 19485501 DOI: 10.1063/1.3131628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
An ion spectrometer, composed of a time-of-flight spectrometer (TOFS) and a Thomson parabola spectrometer (TPS), has been developed to measure energy spectra and to analyze species of laser-driven ions. Two spectrometers can be operated simultaneously, thereby facilitate to compare the independently measured data and to combine advantages of each spectrometer. Real-time and shot-to-shot characterizations have been possible with the TOFS, and species of ions can be analyzed with the TPS. The two spectrometers show very good agreement of maximum proton energy even for a single laser shot. The composite ion spectrometer can provide two complementary spectra measured by TOFS with a large solid angle and TPS with a small one for the same ion source, which are useful to estimate precise total ion number and to investigate fine structure of energy spectrum at high energy depending on the detection position and solid angle. Advantage and comparison to other online measurement system, such as the TPS equipped with microchannel plate, are discussed in terms of overlay of ion species, high-repetition rate operation, detection solid angle, and detector characteristics of imaging plate.
Collapse
Affiliation(s)
- I W Choi
- Advanced Photonics Research Institute and Center for Femto-Atto Science and Technology, GIST, Gwangju 500-712, Republic of Korea.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Panchenko AV, Esirkepov TZ, Pirozhkov AS, Kando M, Kamenets FF, Bulanov SV. Interaction of electromagnetic waves with caustics in plasma flows. Phys Rev E Stat Nonlin Soft Matter Phys 2008; 78:056402. [PMID: 19113221 DOI: 10.1103/physreve.78.056402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2008] [Indexed: 05/27/2023]
Abstract
An electromagnetic wave (EMW) interacting with the moving singularity of the charged particle flux undergoes the reflection and absorption as well as frequency change due to Doppler effect and nonlinearity. The singularity corresponding to a caustic in plasma flow with inhomogeneous velocity can arise during the breaking of the finite amplitude Langmuir waves due to nonlinear effects. A systematic analysis of the wave-breaking regimes and caustics formation is presented and the EMW reflection coefficients are calculated.
Collapse
Affiliation(s)
- A V Panchenko
- Moscow Institute of Physics and Technology, Institutskii pereulok 9, Dolgoprudnyi, Moscow Region, 141700 Russia
| | | | | | | | | | | |
Collapse
|
17
|
Yogo A, Daido H, Bulanov SV, Nemoto K, Oishi Y, Nayuki T, Fujii T, Ogura K, Orimo S, Sagisaka A, Ma JL, Esirkepov TZ, Mori M, Nishiuchi M, Pirozhkov AS, Nakamura S, Noda A, Nagatomo H, Kimura T, Tajima T. Laser ion acceleration via control of the near-critical density target. Phys Rev E Stat Nonlin Soft Matter Phys 2008; 77:016401. [PMID: 18351938 DOI: 10.1103/physreve.77.016401] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2007] [Indexed: 05/26/2023]
Abstract
Duration-controlled amplified spontaneous emission with an intensity of 10(13) W/cm(2) is used to convert a 7.5-microm -thick polyimide foil into a near-critical plasma, in which the p -polarized, 45-fs , 10(19) -Wcm (2) laser pulse generates 3.8-MeV protons, emitted at some angle between the target normal and the laser propagation direction of 45 degrees . Particle-in-cell simulations reveal that the efficient proton acceleration is due to the generation of a quasistatic magnetic field on the target rear side with magnetic pressure inducing and sustaining a charge separation electrostatic field.
Collapse
Affiliation(s)
- A Yogo
- Kansai Photon Science Institute, Japan Atomic Energy Agency (JAEA), Kyoto 619-0215, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Kando M, Fukuda Y, Pirozhkov AS, Ma J, Daito I, Chen LM, Esirkepov TZ, Ogura K, Homma T, Hayashi Y, Kotaki H, Sagisaka A, Mori M, Koga JK, Daido H, Bulanov SV, Kimura T, Kato Y, Tajima T. Demonstration of laser-frequency upshift by electron-density modulations in a plasma wakefield. Phys Rev Lett 2007; 99:135001. [PMID: 17930598 DOI: 10.1103/physrevlett.99.135001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2007] [Indexed: 05/25/2023]
Abstract
In a plasma wake wave generated by a high power laser, modulations of the electron density take the shape of paraboloidal dense shells, moving almost at the speed of light. A counterpropagating laser pulse is partially reflected from the shells, acting as relativistic flying mirrors, producing a time-compressed frequency-multiplied pulse due to the double Doppler effect. The counterpropagating laser pulse reflection from the plasma wake wave accompanied by its frequency multiplication (with a factor from 50 to 114) was detected in our experiment.
Collapse
Affiliation(s)
- M Kando
- Advanced Photon Research Center, JAEA, 8-1 Umemidai, Kizugawa, Kyoto 619-0215, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Kozhevnikov IV, Voronov AS, Roshchin BS, Asadchikov VE, Mednikov KN, Pirozhkov AS, Ragozin EN, Wang Z, Zhong Z, Wang F. Design, fabrication, and study of wideband multilayer X-ray mirrors. CRYSTALLOGR REP+ 2006. [DOI: 10.1134/s1063774506060186] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
20
|
|