MULTIPHOTON DISSOCIATIVE IONIZATION OF O-2 - COMPETITION BETWEEN DISSOCIATION AND IONIZATION IN EXCITED-STATES

被引：9

作者：

YANG, S ^{[1
]}

HILL, WT ^{[1
]}

DIXIT, SN ^{[1
]}

机构：

[1] LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 1994年 / 100卷 / 09期

关键词：

D O I：

10.1063/1.467053

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A mass and energy resolved photoion spectrum of O-2 induced by 12 ns 193 nm radiation with an intensity of 10(10)-10(11) W/cm(2) is presented. The analysis of the spectrum gives (1) the two-photon ionization cross section (approximate to 1.1X10(-54) cm(4) s) of the X (3) Sigma(g)(-) of O-2 and (2) the intensity dependent branching ratios between photoionization and predissociation of the B (3) Sigma(u)(-) state of O-2 The two-photon ionization cross section of O-2 is linked to our ab initio calculation of the three-photon ionization cross section (approximate to 7.5X.10(-84) cm(6) s(2)) of atomic oxygen.

引用

页码：6434 / 6444

页数：11

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