Fully differential study of ionization in p + H2 collisions near electron-projectile velocity matching

被引:17
作者
Hasan, A. [1 ,2 ,3 ]
Arthanayaka, T. [1 ,2 ]
Lamichhane, B. R. [1 ,2 ]
Sharma, S. [1 ,2 ]
Gurung, S. [1 ,2 ]
Remolina, J. [1 ,2 ]
Akula, S. [1 ,2 ]
Madison, D. H. [1 ,2 ]
Ciappina, M. F. [4 ]
Rivarola, R. D. [5 ,6 ]
Schulz, M. [1 ,2 ]
机构
[1] Missouri Univ Sci Technol, Dept Phys, Rolla, MO 65409 USA
[2] Missouri Univ Sci Technol, LAMOR, Rolla, MO 65409 USA
[3] UAE Univ, Dept Phys, POB 15551, Al Ain, U Arab Emirates
[4] Max Planck Inst Quantum Opt, Hans Kopfermann Str 1, D-85748 Garching, Germany
[5] Consejo Nacl Invest Cient & Tecn, Inst Fis Rosario, Lab Colis Atom, Bv 27 Febrero 210 Bis, RA-2000 Rosario, Santa Fe, Argentina
[6] Univ Nacl Rosario, Bv 27 Febrero 210 Bis, RA-2000 Rosario, Santa Fe, Argentina
基金
美国国家科学基金会;
关键词
Ionization; energy-loss spectroscopy; few-body problem; cold target recoil-ion momentum spectroscopy; SINGLE-IONIZATION; MOMENTUM SPECTROSCOPY; CONTINUUM STATES; CROSS-SECTIONS; RECOIL-ION; COLLISIONS; IMPACT; HELIUM; HE; ELECTRONS;
D O I
10.1088/0953-4075/49/4/04LT01
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We have performed a kinematically complete experiment on ionization of H-2 by 75 keV proton impact for electrons ejected with a speed close to the projectile speed. The fully differential data are compared to a three-body distorted wave and a continuum distorted wave-eikonal initial state calculation. Large discrepancies between experiment and theory, as well as between both calculations, are found. These probably arise from a strong coupling between the ionization and capture channels, which is not accounted for by theory.
引用
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页数:6
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共 37 条
  • [1] Separation of single-and two-center interference in ionization of H2 by proton impact
    Arthanayaka, T. P.
    Sharma, S.
    Lamichhane, B. R.
    Hasan, A.
    Remolina, J.
    Gurung, S.
    Schulz, M.
    [J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2015, 48 (07)
  • [2] Differential cross sections for single ionization of H2 by 75-keV proton impact
    Chowdhury, U.
    Schulz, M.
    Madison, D. H.
    [J]. PHYSICAL REVIEW A, 2011, 83 (03):
  • [3] Post-collisional effects on single ionization in 75 keV p+He collisions
    Ciappina, M. F.
    Cravero, W. R.
    Schulz, M.
    [J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2007, 40 (13) : 2577 - 2586
  • [4] Single- and two-centre effects in fully differential cross sections for single ionization of H2 molecules by 75keV protons
    Ciappina, M. F.
    Tachino, C. A.
    Rivarola, R. D.
    Sharma, S.
    Schulz, M.
    [J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2015, 48 (11)
  • [5] EXPERIMENTAL EVIDENCE FOR MECHANISM OF CHARGE TRANSFER INTO CONTINUUM STATES
    CROOKS, GB
    RUDD, ME
    [J]. PHYSICAL REVIEW LETTERS, 1970, 25 (23) : 1599 - &
  • [6] Imaging of saddle point electron emission in slow p-He collisions
    Dorner, R
    Khemliche, H
    Prior, MH
    Cocke, CL
    Gary, JA
    Olson, RE
    Mergel, V
    Ullrich, J
    SchmidtBocking, H
    [J]. PHYSICAL REVIEW LETTERS, 1996, 77 (22) : 4520 - 4523
  • [7] Cold Target Recoil Ion Momentum Spectroscopy:: a 'momentum microscope' to view atomic collision dynamics
    Dörner, R
    Mergel, V
    Jagutzki, O
    Spielberger, L
    Ullrich, J
    Moshammer, R
    Schmidt-Böcking, H
    [J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2000, 330 (2-3): : 95 - 192
  • [8] Manipulating Atomic Fragmentation Processes by Controlling the Projectile Coherence
    Egodapitiya, K. N.
    Sharma, S.
    Hasan, A.
    Laforge, A. C.
    Madison, D. H.
    Moshammer, R.
    Schulz, M.
    [J]. PHYSICAL REVIEW LETTERS, 2011, 106 (15)
  • [9] Highly charged particle impact ionization of He
    Foster, M
    Madison, DH
    Peacher, JL
    Ullrich, J
    [J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2004, 37 (19) : 3797 - 3807
  • [10] ENERGY SPREAD AND ION CURRENT MEASUREMENTS OF SEVERAL ION SOURCES
    GAUS, AD
    HTWE, WT
    BRAND, JA
    GAY, TJ
    SCHULZ, M
    [J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1994, 65 (12) : 3739 - 3745