Two-photon double ionization of the hydrogen molecule

被引：31
作者：
Colgan, J. [1 ]
Pindzola, M. S. [2 ]
Robicheaux, F. [2 ]
机构：
[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
[2] Auburn Univ, Dept Phys, Auburn, AL 36849 USA
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2008年 / 41卷 / 12期
关键词：
D O I：
10.1088/0953-4075/41/12/121002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Cross sections for the removal of both electrons of the hydrogen molecule by two photons are presented at 30 eV photon energy using the time-dependent close-coupling method. Our approach allows detailed information about the dynamics of the ionization process to be extracted, including angular distributions for the outgoing electrons. Analysis of our calculations reveals some similarities to the analogous process of two-photon double ionization of helium, but also uncovers some purely molecular effects. For example, we find that the differential cross sections vary with the kinetic energy released to the outgoing protons if the molecule is parallel to the polarization direction, but do not vary if the molecule is perpendicular to the polarization direction.
引用
收藏
页数：6
相关论文
共 27 条
  • [1] Routes to control of H2 Coulomb explosion in few-cycle laser pulses -: art. no. 183202
    Alnaser, AS
    Tong, XM
    Osipov, T
    Voss, S
    Maharjan, CM
    Ranitovic, P
    Ulrich, B
    Shan, B
    Chang, Z
    Lin, CD
    Cocke, CL
    [J]. PHYSICAL REVIEW LETTERS, 2004, 93 (18) : 183202 - 1
  • [2] BANDRAUK AD, 1994, MOL LASER FIELDS, P23001
  • [3] Triple differential cross sections for the double photoionization of H2
    Colgan, J.
    Pindzola, M. S.
    Robicheaux, F.
    [J]. PHYSICAL REVIEW LETTERS, 2007, 98 (15)
  • [4] Time-dependent close-coupling calculations for the double photoionization of He and H2
    Colgan, J
    Pindzola, MS
    Robicheaux, F
    [J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2004, 37 (23) : L377 - L384
  • [5] Core-excited resonance enhancement in the two-photon complete fragmentation of helium
    Colgan, J
    Pindzola, MS
    [J]. PHYSICAL REVIEW LETTERS, 2002, 88 (17) : 4 - 173002
  • [6] Two-photon double ionization of He
    Feng, L
    van der Hart, HW
    [J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2003, 36 (01) : L1 - L7
  • [7] Theory of multiphoton single and double ionization of two-electron atomic systems driven by short-wavelength electric fields:: An ab initio treatment
    Foumouo, Emmanuel
    Kamta, Gerard Lagmago
    Edah, Gaston
    Piraux, Bernard
    [J]. PHYSICAL REVIEW A, 2006, 74 (06):
  • [8] Photodouble ionization dynamics for fixed-in-space H2
    Gisselbrecht, M
    Lavollée, M
    Huetz, A
    Bolognesi, P
    Avaldi, L
    Seccombe, DP
    Reddish, TJ
    [J]. PHYSICAL REVIEW LETTERS, 2006, 96 (15)
  • [9] Multiphoton ionization of He by using intense high-order harmonics in the soft-x-ray region
    Hasegawa, H
    Takahashi, EJ
    Nabekawa, Y
    Ishikawa, KL
    Midorikawa, K
    [J]. PHYSICAL REVIEW A, 2005, 71 (02):
  • [10] Role of nuclear motion in double ionization of molecular hydrogen by a single photon
    Horner, D. A.
    Vanroose, W.
    Rescigno, T. N.
    Martin, F.
    McCurdy, C. W.
    [J]. PHYSICAL REVIEW LETTERS, 2007, 98 (07)
123