DIFFERENTIAL ELECTRON-EMISSION FOR ISOTACTIC H+ AND HE-2+ IMPACT ON HELIUM

被引：27

作者：

DUBOIS, RD

机构：

[1] Pacific Northwest Laboratory, Richland

来源：

PHYSICAL REVIEW A | 1993年 / 48卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.48.1123

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Experimental data are presented for differential electron emission from helium induced by isotachic H+ and He-2+ impact. Electron emission at 15-degrees was studied in order to investigate maxima in the d2sigma/dupsilon(e)dOMEGA spectra. These maxima were previously observed to shift to lower electron velocities as the projectile charge state increased and the shifts were interpreted as evidence of an independent saddle-point-ionization mechanism. The present data for H+ and He2+ impact do not confirm any such shifts and indicate that previous He-2+ measurements, where shifts were observed, are in error.

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页码：1123 / 1128

页数：6

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