Electron correlation in fast ion-impact single ionization of helium atoms

doi:10.1088/1674-1056/24/1/013401

中国物理B ›› 2015, Vol. 24 ›› Issue (1): 13401-013401.doi: 10.1088/1674-1056/24/1/013401

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Electron correlation in fast ion-impact single ionization of helium atoms

E. Ghanbari-Adivi, S. Eskandari

Department of Physics and Isfahan Quantum Optics Group (IQOG), Faculty of Science, University of Isfahan, Isfahan 81746-73441, Iran

收稿日期:2014-08-17 修回日期:2014-11-25 出版日期:2015-01-05 发布日期:2015-01-05

Electron correlation in fast ion-impact single ionization of helium atoms

E. Ghanbari-Adivi, S. Eskandari

Department of Physics and Isfahan Quantum Optics Group (IQOG), Faculty of Science, University of Isfahan, Isfahan 81746-73441, Iran

Received:2014-08-17 Revised:2014-11-25 Online:2015-01-05 Published:2015-01-05
Contact: E. Ghanbari-Adivi E-mail:ghanbari@phys.ui.ac.ir

摘要/Abstract

摘要：

A four-body distorted-wave approximation is applied for theoretical analysis of the fully differential cross sections (FDCS) for proton-impact single ionization of helium atoms in their ground states. The nine-dimensional integrals for the partial amplitudes are analytically reduced to closed-form expressions or some one-dimensional integrals which can be easily calculated numerically. Calculations are performed in the scattering and perpendicular planes. The influence of the target static electron correlations on the process is investigated using a number of different bound-state wave functions for the ground state of the helium targets. An illustrative computation is performed for 75-keV proton-helium collisions and the obtained results are compared with experimental data and other theoretical predictions. Although for small momentum transfers, the comparison shows a reasonable agreement with experiments in the scattering and perpendicular planes, some significant discrepancies are still present at large momentum transfers in these planes. However, our results are compatible and for some cases, better than those of the other sophisticated calculations.

关键词: single ionization, four-body collision, distorted-wave approximation, electron correlation

Abstract:

Key words: single ionization, four-body collision, distorted-wave approximation, electron correlation

中图分类号: (Atomic excitation and ionization)

34.80.Dp

E. Ghanbari-Adivi, S. Eskandari. Electron correlation in fast ion-impact single ionization of helium atoms[J]. 中国物理B, 2015, 24(1): 13401-013401.

E. Ghanbari-Adivi, S. Eskandari. Electron correlation in fast ion-impact single ionization of helium atoms[J]. Chin. Phys. B, 2015, 24(1): 13401-013401.

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Electron correlation in fast ion-impact single ionization of helium atoms

Electron correlation in fast ion-impact single ionization of helium atoms

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