Ionization-excitation of helium into the np (n = 2-5) states

被引：4

作者：

Nagy, L ^{[1
]}

Mezei, JZ ^{[1
]}

机构：

[1] Univ Babes Bolyai, Fac Phys, R-3400 Cluj Napoca, Romania

来源：

PHYSICS LETTERS A | 1999年 / 252卷 / 06期

关键词：

multi-electron transitions; ion-atom collisions; ionization-excitation; helium atom;

D O I：

10.1016/S0375-9601(98)00963-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Cross sections for the simultaneous ionization and excitation to the np states (n = 2-5) of the helium atom by fast proton and antiproton impact have been calculated. We have applied the impact parameter method and have used second-order perturbation approximation. Electron correlation has been taken into account in the initial state but has been neglected in the final state. Our cross sections are compared to the experimental data. (C) 1999 Published by Elsevier Science B.V.

引用

页码：321 / 327

页数：7

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