MEASUREMENTS OF CROSS-SECTIONS FOR DETACHMENT OF ELECTRONS FROM C- AND O- IONS BY ELECTRON-IMPACT

被引：32

作者：

PEART, B

FORREST, R

DOLDER, KT

机构：

[1] Department of Atomic Physics, University, Newcastle-upon-Tyne

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1979年 / 12卷 / 05期

关键词：

D O I：

10.1088/0022-3700/12/5/028

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Cross sections have been measured for detachment by electron impact from C- and O- ions for interaction energies between 10 and 1000 eV. For C- the cross section attained a maximum value 1.85*10-15 cm2 at 18.2 eV whilst for O- the maximum value was 6.48*10-16 cm2 at 28.1 eV. For both ions the Bethe asymptote was reached only at energies greater than about 300 times threshold. Structure was observed in the cross section for O - at energies close to 18 eV which suggests the formation of a short-lived excited state of O2-.

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页码：847 / 853

页数：7

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