Electron-impact double ionization o He (1s2s3 S)

被引：0
|
作者：
Pindzola, M. S. [1 ]
Colgan, J. P. [2 ]
机构：
[1] Auburn Univ, Dept Phys, Auburn, AL 36849 USA
[2] Los Alamos Natl Lab, Theoret Div, Los Alamos, NM USA
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2021年 / 54卷 / 11期
关键词：
electron; ionization; atom; MULTIPLE IONIZATION; CROSS-SECTIONS; HELIUM; SCATTERING; BREAKUP; SINGLE; ATOMS;
D O I：
10.1088/1361-6455/abd646
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A time-dependent close-coupling method for three-electron atomic systems is used to calculate the electron-impact double ionization of the He (1s2s(3) S) excited state. Partial cross sections are calculated for total angular momenta from L = 0 - 5. An exponential fitting expression is used to extend the calculated partial cross sections to L = 6 - 40. The total cross sections at three different incident energies are compared with recent crossed-beams measurements and are found to lie within the experimental error bars. The magnitude of the double ionization cross section is found to be similar to that of the double ionization cross section from the ground state of He.
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页数：4
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