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Schmidt HT, Fardi A, Schuch R, Schwartz SH, Zettergren H, Cederquist H, Bagge L, Danared H, Källberg A, Jensen J, Rensfelt KG, Mergel V, Schmidt L, Schmidt-Böcking H, Cocke CL. Double-to-single target ionization ratio for electron capture in fast p-He collisions. PHYSICAL REVIEW LETTERS 2002; 89:163201. [PMID: 12398718 DOI: 10.1103/physrevlett.89.163201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2001] [Indexed: 05/24/2023]
Abstract
We have used the ion storage ring CRYRING and its internal gas-jet target and recoil-ion-momentum spectrometer to measure absolute cross sections for transfer ionization (TI: p+He-->H0+He2++e(-)) in 2.5-4.5 MeV p-He collisions with separate Thomas (TTI) and kinematic (KTI) TI contributions. The probability for electron emission in kinematical capture decreases with increasing velocity and appears to approach the photoionization shakeoff value (1.63%) [T. Aberg, Phys. Rev. A 2, 1726 (1970)]]. The velocity dependence of the TTI cross section is consistent with the theoretically predicted v(-11) scaling [J. S. Briggs and K. Taulbjerg, J. Phys. B 12, 2565 (1979)]].
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Affiliation(s)
- H T Schmidt
- Department of Physics, Stockholm University, Sweden
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Wang J, McGuire JH, Burgdörfer J, Qiu Y. Consistency test of double ionization of helium by photons and charged particles. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 54:613-616. [PMID: 9913514 DOI: 10.1103/physreva.54.613] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Kornberg MA, Miraglia JE. Compton-scattering contribution to the double ionization of He in the A2 approximation. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:R3709-R3712. [PMID: 9913448 DOI: 10.1103/physreva.53.r3709] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Wehlitz R, Hentges R, Prümper G, Farhat A, Buslaps T, Berrah N, Levin JC, Sellin IA, Becker U. Compton double-to-single ionization ratio of helium at 57 keV. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:R3720-R3722. [PMID: 9913451 DOI: 10.1103/physreva.53.r3720] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Dörner R, Vogt T, Mergel V, Khemliche H, Kravis S, Cocke CL, Ullrich J, Unverzagt M, Spielberger L, Damrau M, Jagutzki O, Ali I, Weaver B, Ullmann K, Hsu CC, Jung M, Kanter EP, Sonntag B, Prior MH, Rotenberg E, Denlinger J, Warwick T, Manson ST, Schmidt-Böcking H. Ratio of cross sections for double to single ionization of He by 85-400 eV photons. PHYSICAL REVIEW LETTERS 1996; 76:2654-2657. [PMID: 10060755 DOI: 10.1103/physrevlett.76.2654] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Levin JC, Armen GB, Sellin IA. Photoionization and Compton double ionization of helium from threshold to 20 keV. PHYSICAL REVIEW LETTERS 1996; 76:1220-1223. [PMID: 10061666 DOI: 10.1103/physrevlett.76.1220] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Kornberg MA, Miraglia JE. Retardation effects and angular coefficients in double photoionization. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 52:2915-2924. [PMID: 9912576 DOI: 10.1103/physreva.52.2915] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Spielberger L, Jagutzki O, Dörner R, Ullrich J, Meyer U, Mergel V, Unverzagt M, Damrau M, Vogt T, Ali I, Khayyat K, Bahr D, Schmidt HG, Frahm R, Schmidt-Böcking H. Separation of photoabsorption and Compton scattering contributions to He single and double ionization. PHYSICAL REVIEW LETTERS 1995; 74:4615-4618. [PMID: 10058555 DOI: 10.1103/physrevlett.74.4615] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Wang J, McGuire JH, Burgdörfer J. Relationship between the ratios of double to single ionization of helium by photons and charged particles. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 51:4687-4693. [PMID: 9912158 DOI: 10.1103/physreva.51.4687] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Manson ST, McGuire JH. Ratio of double to single ionization of helium: The relationship between ionization by photons and by bare charged particles. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 51:400-405. [PMID: 9911597 DOI: 10.1103/physreva.51.400] [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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Azuma Y, Berry HG, Gemmell DS, Suleiman J, Westerlind M, Sellin IA, Woicik JC, Kirkland JP. Attenuation of photons at 3-14-keV energies in helium. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 51:447-453. [PMID: 9911603 DOI: 10.1103/physreva.51.447] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Wuilleumier FJ, Journel L, Rouvellou B, Cubaynes D, Bizau J, Liu Z, Liu J, Richter M, Sladeczek P, Selbman K, Zimmermann P. Direct double photoionization involving inner and outer electrons: First experimental determination and many-body calculations of an absolute cross section. PHYSICAL REVIEW LETTERS 1994; 73:3074-3077. [PMID: 10057281 DOI: 10.1103/physrevlett.73.3074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Rouvellou B, Journel L, Bizau JM, Cubaynes D, Wuilleumier FJ, Richter M, Selbmann K, Sladeczek P, Zimmermann P. Direct double photoionization of atomic sodium. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 50:4868-4876. [PMID: 9911485 DOI: 10.1103/physreva.50.4868] [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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Andersson L, Burgdörfer J. Excitation-ionization and double ionization of helium by Compton scattering. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 50:R2810-R2813. [PMID: 9911318 DOI: 10.1103/physreva.50.r2810] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Hino K, Bergstrom PM, Macek JH. Contribution of Compton scattering to the double ionization of helium. PHYSICAL REVIEW LETTERS 1994; 72:1620-1623. [PMID: 10055658 DOI: 10.1103/physrevlett.72.1620] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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