TY - JOUR
T1 - Electron-impact double ionization of He at large momentum transfer studied by second-order Born-approximation calculations
AU - Watanabe, Noboru
AU - Kouzakov, K. A.
AU - Popov, Yu V.
AU - Takahashi, Masahiko
PY - 2008/3/28
Y1 - 2008/3/28
N2 - We report results of second-order Born-approximation (SBA) calculations for electron-impact double ionization of He at large momentum transfer. Comparisons are made with symmetric noncoplanar (e,3-1e) experiments at impact energies of 2080 and 4260 eV. The SBA calculations clearly show that second-order two-step mechanisms play crucial roles in double ionization of He under the kinematical conditions studied. Furthermore, contributions of the two-step mechanisms are found to be more prominent with the increase in the slow ejected electron energy.
AB - We report results of second-order Born-approximation (SBA) calculations for electron-impact double ionization of He at large momentum transfer. Comparisons are made with symmetric noncoplanar (e,3-1e) experiments at impact energies of 2080 and 4260 eV. The SBA calculations clearly show that second-order two-step mechanisms play crucial roles in double ionization of He under the kinematical conditions studied. Furthermore, contributions of the two-step mechanisms are found to be more prominent with the increase in the slow ejected electron energy.
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U2 - 10.1103/PhysRevA.77.032725
DO - 10.1103/PhysRevA.77.032725
M3 - Article
AN - SCOPUS:41549131614
VL - 77
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 3
M1 - 032725
ER -