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Kang J, Ko DK. Femtosecond laser-induced X-ray fluorescence measurement of metal-protein compounds. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2020.109334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Martín L, Benlliure J, Cortina-Gil D, Haruna A, Ruiz C. Validation of a laser driven plasma X-ray microfocus source for high resolution radiography imaging. Phys Med 2021; 82:163-170. [PMID: 33640836 DOI: 10.1016/j.ejmp.2020.12.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 11/04/2020] [Accepted: 12/31/2020] [Indexed: 11/19/2022] Open
Abstract
Hard X-ray radiation with high brightness and high fluxes is nowadays available on the fourth generation of synchrotrons and X-FELs, but the large size and complexity of these sources makes its use difficult for widespread applications. New table top X-ray sources driven by ultrashort high power lasers offer a compelling route to expand the availability of hard X-ray sources. They can be used for advanced imaging techniques, due to its small source size and spatial coherence. We present in this paper the validation of a compact laser-driven X-ray microfocus source for high-resolution radiography imaging. This novel device was built at the Laser Laboratory for Acceleration and Applications (L2A2) at the University of Santiago de Compostela. This paper describes the laser-plasma X-ray source with improved stability and characterize some of its properties. We demonstrate the high-contrast and resolution of the images obtained with this source by using masks with well known geometries, and detailed analysis by using the modulation transfer function. Finally, we discuss the properties of this source in comparison to other compact microfocus X-ray sources.
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Affiliation(s)
- L Martín
- IGFAE, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
| | - J Benlliure
- IGFAE, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - D Cortina-Gil
- IGFAE, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - A Haruna
- IGFAE, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - C Ruiz
- Instituto de Física Fundamental y Matemáticas, Universidad de Salamanca, Spain
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Gambari M, Clady R, Stolidi A, Utéza O, Sentis M, Ferré A. Exploring phase contrast imaging with a laser-based K α x-ray source up to relativistic laser intensity. Sci Rep 2020; 10:6766. [PMID: 32317682 PMCID: PMC7174335 DOI: 10.1038/s41598-020-63614-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 04/01/2020] [Indexed: 02/04/2023] Open
Abstract
This study explores the ability of a hard Kα x-ray source (17.48 keV) produced by a 10 TW class laser system operated at high temporal contrast ratio and high repetition rate for phase contrast imaging. For demonstration, a parametric study based on a known object (PET films) shows clear evidence of feasibility of phase contrast imaging over a large range of laser intensity on target (from ~1017 W/cm2 to 7.0 × 1018 W/cm2). To highlight this result, a comparison of raw phase contrast and retrieved phase images of a biological object (a wasp) is done at different laser intensities below the relativistic intensity regime and up to 1.3 × 1019 W/cm2. This brings out attractive imaging strategies by selecting suitable laser intensity for optimizing either high spatial resolution and high quality of image or short acquisition time.
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Affiliation(s)
- M Gambari
- Aix Marseille Université, CNRS, LP3, 13288, Marseille, France.
| | - R Clady
- Aix Marseille Université, CNRS, LP3, 13288, Marseille, France
| | - A Stolidi
- CEA, LIST, Department of Imaging and Simulation for Non-Destructive Testing, F-91191, Gif-sur-Yvette, France
| | - O Utéza
- Aix Marseille Université, CNRS, LP3, 13288, Marseille, France
| | - M Sentis
- Aix Marseille Université, CNRS, LP3, 13288, Marseille, France
| | - A Ferré
- Aix Marseille Université, CNRS, LP3, 13288, Marseille, France
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Azamoum Y, Clady R, Ferré A, Gambari M, Utéza O, Sentis M. High photon flux Kα Mo x-ray source driven by a multi-terawatt femtosecond laser at 100 Hz. OPTICS LETTERS 2018; 43:3574-3577. [PMID: 30067627 DOI: 10.1364/ol.43.003574] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 06/15/2018] [Indexed: 06/08/2023]
Abstract
We develop a pulsed hard x-ray Kα source at 17.4 keV produced by the interaction of a multi-terawatt peak power infrared femtosecond laser pulse with a thick molybdenum (Mo) target at a 100 Hz repetition rate. We measure the highest Mo Kα photon production reported to date corresponding to a Kα photon flux of 1×1011 ph/(sr·s) and an estimated peak brightness of ∼2.5×1017 ph/(s·mm2·mrad2(0.1% bandwidth)) at ∼5×1018 W/cm2 driving laser intensity.
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Azamoum Y, Tcheremiskine V, Clady R, Ferré A, Charmasson L, Utéza O, Sentis M. Impact of the pulse contrast ratio on molybdenum K α generation by ultrahigh intensity femtosecond laser solid interaction. Sci Rep 2018; 8:4119. [PMID: 29515179 PMCID: PMC5841281 DOI: 10.1038/s41598-018-22487-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 02/23/2018] [Indexed: 11/15/2022] Open
Abstract
We present an extended experimental study of the absolute yield of Kα x-ray source (17.48 keV) produced by interaction of an ultrahigh intensity femtosecond laser with solid Mo target for temporal contrast ratios in the range of 1.7 × 107-3.3 × 109 and on three decades of intensity 1016-1019 W/cm². We demonstrate that for intensity I ≥ 2 × 1018 W/cm² Kα x-ray emission is independent of the value of contrast ratio. In addition, no saturation of the Kα photon number is measured and a value of ~2 × 1010 photons/sr/s is obtained at 10 Hz and I ~1019 W/cm². Furthermore, Kα energy conversion efficiency reaches the same high plateau equal to ~2 × 10-4 at I = 1019 W/cm² for all the studied contrast ratios. This original result suggests that relativistic J × B heating becomes dominant in these operating conditions which is supposed to be insensitive to the electron density gradient scale length L/λ. Finally, an additional experimental study performed by changing the angle of incidence of the laser beam onto the solid target highlights a clear signature of the interplay between collisionless absorption mechanisms depending on the contrast ratio and intensity.
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Affiliation(s)
- Y Azamoum
- Aix Marseille Université, CNRS, LP3 UMR 7341, 13288, Marseille, France.
| | - V Tcheremiskine
- Aix Marseille Université, CNRS, LP3 UMR 7341, 13288, Marseille, France
| | - R Clady
- Aix Marseille Université, CNRS, LP3 UMR 7341, 13288, Marseille, France
| | - A Ferré
- Aix Marseille Université, CNRS, LP3 UMR 7341, 13288, Marseille, France
| | - L Charmasson
- Aix Marseille Université, CNRS, LP3 UMR 7341, 13288, Marseille, France
| | - O Utéza
- Aix Marseille Université, CNRS, LP3 UMR 7341, 13288, Marseille, France
| | - M Sentis
- Aix Marseille Université, CNRS, LP3 UMR 7341, 13288, Marseille, France
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