DOUBLE-IONIZATION OF ATOMIC HELIUM UNDER HEAVY-ION IMPACT

被引：20

作者：

PRESNYAKOV, LP ^{[1
]}

TAWARA, H ^{[1
]}

TOLSTIKHINA, IY ^{[1
]}

USKOV, DB ^{[1
]}

机构：

[1] NATL INST FUS SCI,NAGOYA,AICHI 46401,JAPAN

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1995年 / 28卷 / 05期

关键词：

D O I：

10.1088/0953-4075/28/5/011

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Cross sections for double ionization of helium by multiply-charged ion impact and the corresponding ratios of double-to-single ionization are presented as a sum of the contributions given by the one-step (shake-off) and two-step (TS) processes. An analytic form is found for the continuum wavefunction which is valid in both limiting cases of low and high velocities of the relative motion. Using this wavefunction, the TS cross sections are calculated within the independent-event model. The results for the ratios of double-to-single ionization show satisfactory agreement with the experimental data available.

引用

页码：785 / 793

页数：9

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