VIBRATIONALLY RESOLVED SHAPE RESONANT PHOTOIONIZATION OF SIF4

被引：15

作者：

KAKAR, S

POLIAKOFF, ED

ROSENBERG, RA

机构：

[1] LOUISIANA STATE UNIV, DEPT CHEM, BATON ROUGE, LA 70803 USA

[2] UNIV WISCONSIN, CTR SYNCHROTRON RADIAT, MADISON, WI 53706 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 1992年 / 96卷 / 01期

关键词：

D O I：

10.1063/1.462511

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：

We have measured vibrationally resolved fluorescence from SiF4+ (approximately D 2A1) photoions to determine the vibrational branching ratio sigma[upsilon = (1,0,0,0)]/sigma[upsilon = (0,0,0,0)] in the excitation energy range 22 < hv < 70 eV. The branching ratio shows pronounced enhancements at hv = 25 and 45 eV. The deviation from Franck-Condon behavior at higher energy (hv = 45 eV) is attributed to a shape resonance and it appears that a shape resonance is also responsible for the lower energy feature (hv = 25 eV). However, the present results in this lower energy region conflict with interpretations of previous vibrationally unresolved work. Applications of these results to general problems in polyatomic photoionization are discussed.

引用

页码：23 / 27

页数：5

共 49 条

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