ABSOLUTE CROSS-SECTION FOR DISSOCIATIVE ELECTRON-ATTACHMENT IN O-2 CONDENSED ON KR FILM

被引：63

作者：

SAMBE, H ^{[1
]}

RAMAKER, DE ^{[1
]}

DESCHENES, M ^{[1
]}

BASS, AD ^{[1
]}

SANCHE, L ^{[1
]}

机构：

[1] UNIV SHERBROOKE,FAC MED,CANADIAN MED RES COUNCIL GRP RADIAT SCI,SHERBROOKE J1H 5N4,QUEBEC,CANADA

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.64.523

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The absolute dissociative-electron-attachment cross section for O2 condensed on a Kr film is found to be about 20 times larger than that for gaseous O2. This large enhancement is attributed to a downward energy shift (0.9 eV) of the O2- (2 u) intermediate state due to electronic polarization of the neighboring Kr atoms. Based on the theory developed by OMalley [Phys. Rev. 150, 14 (1966)] and 155, 59 (1967)], we have shown that this downward shift increases the dissociative attachment by a factor of about 21, through a reduction in the autoionization of the intermediate state. © 1990 The American Physical Society.

引用

页码：523 / 526

页数：4

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