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La Mantia DS, Kumara PNS, Buglione SL, McCoy CP, Taylor CJ, White JS, Kayani A, Tanis JA. Radiative Double-Electron Capture by Bare and One-Electron Ions on Gas Targets. PHYSICAL REVIEW LETTERS 2020; 124:133401. [PMID: 32302201 DOI: 10.1103/physrevlett.124.133401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 02/10/2020] [Indexed: 06/11/2023]
Abstract
Radiative double-electron capture (RDEC) involves the transfer of two electrons with the simultaneous emission of a single photon. This process, which can be viewed as the inverse of double photoionzation, has been studied for 2.11 MeV/u F^{9+} and F^{8+} ions striking gas targets of N_{2} and Ne. The existence of RDEC is conclusively shown for both targets and the results are compared with earlier O^{8+} and F^{9+} findings for thin-foil carbon and with theory. The data for the carbon target showed some evidence for the existence of RDEC, but the interpretation was clouded by high-probability, unavoidable multiple collisions causing the exiting charge state to be increased.
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Affiliation(s)
- D S La Mantia
- Western Michigan University, Kalamazoo, Michigan 49008, USA
| | - P N S Kumara
- Western Michigan University, Kalamazoo, Michigan 49008, USA
| | - S L Buglione
- Western Michigan University, Kalamazoo, Michigan 49008, USA
| | - C P McCoy
- Western Michigan University, Kalamazoo, Michigan 49008, USA
| | - C J Taylor
- Western Michigan University, Kalamazoo, Michigan 49008, USA
| | - J S White
- Western Michigan University, Kalamazoo, Michigan 49008, USA
| | - A Kayani
- Western Michigan University, Kalamazoo, Michigan 49008, USA
| | - J A Tanis
- Western Michigan University, Kalamazoo, Michigan 49008, USA
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Tashenov S, Banaś D, Beyer H, Brandau C, Fritzsche S, Gumberidze A, Hagmann S, Hillenbrand PM, Jörg H, Kojouharov I, Kozhuharov C, Lestinsky M, Litvinov YA, Maiorova AV, Schaffner H, Shabaev VM, Spillmann U, Stöhlker T, Surzhykov A, Trotsenko S. Observation of coherence in the time-reversed relativistic photoelectric effect. PHYSICAL REVIEW LETTERS 2014; 113:113001. [PMID: 25259973 DOI: 10.1103/physrevlett.113.113001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Indexed: 06/03/2023]
Abstract
The photoelectric effect has been studied in the regime of hard x rays and strong Coulomb fields via its time-reversed process of radiative recombination (RR). In the experiment, the relativistic electrons recombined into the 2p_{3/2} excited state of hydrogenlike uranium ions, and both the RR x rays and the subsequently emitted characteristic x rays were detected in coincidence. This allowed us to observe the coherence between the magnetic substates in a highly charged ion and to identify the contribution of the spin-orbit interaction to the RR process.
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Affiliation(s)
- S Tashenov
- Physikalisches Institut der Universität Heidelberg, 69120 Heidelberg, Germany
| | - D Banaś
- Institute of Physics, Jan Kochanowski University, 25-406 Kielce, Poland
| | - H Beyer
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - C Brandau
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany and FIAS Frankfurt Institute for Advanced Studies, 60438 Frankfurt am Main, Germany
| | - S Fritzsche
- Helmholtz-Institut Jena, 07743 Jena, Germany and Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
| | - A Gumberidze
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany and FIAS Frankfurt Institute for Advanced Studies, 60438 Frankfurt am Main, Germany
| | - S Hagmann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - P-M Hillenbrand
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - H Jörg
- Physikalisches Institut der Universität Heidelberg, 69120 Heidelberg, Germany
| | - I Kojouharov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - Ch Kozhuharov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - M Lestinsky
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - Yu A Litvinov
- Physikalisches Institut der Universität Heidelberg, 69120 Heidelberg, Germany and GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A V Maiorova
- St. Petersburg State University, 198504 St. Petersburg, Russia
| | - H Schaffner
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - V M Shabaev
- St. Petersburg State University, 198504 St. Petersburg, Russia
| | - U Spillmann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - Th Stöhlker
- Helmholtz-Institut Jena, 07743 Jena, Germany and Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
| | - A Surzhykov
- Helmholtz-Institut Jena, 07743 Jena, Germany
| | - S Trotsenko
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany and Helmholtz-Institut Jena, 07743 Jena, Germany
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Simon A, Warczak A, Elkafrawy T, Tanis JA. Radiative double electron capture in collisions of O8+ ions with carbon. PHYSICAL REVIEW LETTERS 2010; 104:123001. [PMID: 20366528 DOI: 10.1103/physrevlett.104.123001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2009] [Indexed: 05/29/2023]
Abstract
Multielectron capture processes observed in low energy collisions of bare ions with target atoms open insight into electron correlations in electromagnetic fields. Radiative double electron capture (RDEC) provides the simplest tool for investigation of such processes. Here, the experimental observation of the RDEC process in collisions of O8+ ions with thin carbon films is presented and the RDEC cross section value obtained is compared with recent theoretical calculations.
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Affiliation(s)
- A Simon
- Institute of Physics, Jagiellonian University, Krakow, Poland.
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Bräuning H, Mokler PH, Liesen D, Bosch F, Franzke B, Krämer A, Kozhuharov C, Ludziejewski T, Ma X, Nolden F, Steck M, Stöhlker T, Dunford RW, Kanter EP, Bednarz G, Warczak A, Stachura Z, Tribedi L, Kambara T, Dauvergne D, Kirsch R, Cohen C. Strong evidence for enhanced multiple electron capture from surfaces in 46 MeV/u Pb81+ collisions with thin carbon foils. PHYSICAL REVIEW LETTERS 2001; 86:991-994. [PMID: 11177992 DOI: 10.1103/physrevlett.86.991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2000] [Indexed: 05/23/2023]
Abstract
Strong evidence has been found for enhanced multiple electron capture into 46 MeV/u Pb81+ with a significant contribution from the entrance surface of thin carbon foils. Capture of up to five electrons has been observed. The multiple electron capture yield is found to increase with decreasing target thickness for thin targets. A simple model describing the data and showing the importance of capture from surfaces is discussed. Further evidence is found for a pronounced asymmetry between electron capture at the entrance and the exit surfaces. Absolute yields for multiple electron capture and projectile ionization are presented. The experimental total cross sections for single capture and ionization agree well with theory.
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Affiliation(s)
- H Bräuning
- Gesellschaft für Schwerionenforschung, Darmstadt, Germany
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Weick H, Geissel H, Scheidenberger C, Attallah F, Cortina D, Hausmann M, Munzenberg G, Radon T, Schatz H, Schmidt K, Stadlmann J, Summerer K, Winkler M. Drastic enhancement of energy-loss straggling of relativistic heavy ions due to charge-state fluctuations. PHYSICAL REVIEW LETTERS 2000; 85:2725-2728. [PMID: 10991218 DOI: 10.1103/physrevlett.85.2725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2000] [Revised: 06/09/2000] [Indexed: 05/23/2023]
Abstract
Stopping power and energy-loss straggling of 197Au, 208Pb, and 209Bi projectiles have been measured in different solids (4</=Z2</=82) in the energy range (100-1000) MeV/u. The experimental results clearly demonstrate the influence of the different charge states of the ions. Because of charge-state fluctuations the energy-loss straggling is up to 7 times larger than the pure collisional straggling. The selected energy domain in combination with the heavy projectiles allows for the first time an unambiguous interpretation of the long-standing problem of charge-changing collisions in energy-loss straggling.
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Affiliation(s)
- H Weick
- Gesellschaft fur Schwerionenforschung, 64291 Darmstadt, Germany and II. Physikalisches Institut, Universitat Giessen, 35392 Giessen, Germany
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Glass JT, McCann JF, Crothers DSF, Momberger K. Radiative electron capture by relativistic heavy ions. Proc Math Phys Eng Sci 1997. [DOI: 10.1098/rspa.1997.0022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J. T. Glass
- Institut für Theoretische Physik der Justus-Liebig-Universität, Downing Street, Cambridge CB2 3EJ, UK
- Theoretical and Computational Physics Research Division, Queen's University of Belfast, Belfast BT7 1NN, UK
| | - J. F. McCann
- Department of Physics, The University, Durham DH1 3LE, UK
| | - D. S. F. Crothers
- Theoretical and Computational Physics Research Division, Queen's University of Belfast, Belfast BT7 1NN, UK
| | - K. Momberger
- Lawrence Berkeley National Laboratory, University of California, USA
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Ichihara A, Shirai T, Eichler J. Radiative electron capture and the photoelectric effect at high energies. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 54:4954-4959. [PMID: 9914060 DOI: 10.1103/physreva.54.4954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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8
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Andriamonje S, Chevallier M, Cohen C, Cue N, Dauvergne D, Dural J, Fujimoto F, Kirsch R, L'Hoir A, Poizat J, Quéré Y, Remillieux J, Röhl C, Rothard H, Rozet JP, Schmaus D, Toulemonde M, Vernhet D. K-shell radiative electron capture with bare 60-MeV/u Kr ions channeled in a Si crystal: Experiments and simulations. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 54:1404-1416. [PMID: 9913606 DOI: 10.1103/physreva.54.1404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Beiersdorfer P, Elliott SR, Osterheld A, Stöhlker T, Autrey J, Brown GV, Smith AJ, Widmann K. Search for 1s2s 3S1-1s2p 3P2 decay in U90+. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:4000-4006. [PMID: 9913364 DOI: 10.1103/physreva.53.4000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Eichler J, Ichihara A, Shirai T. Photon angular distributions from radiative electron capture in relativistic atomic collisions. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 51:3027-3035. [PMID: 9911938 DOI: 10.1103/physreva.51.3027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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