Photoexcitation of the NO dimer below the threshold of the NO(A2Σ+)+NO(X2Π) channel:: a photoion and photoelectron imaging study

被引：18

作者：

Dribinski, V ^{[1
]}

Potter, AB ^{[1
]}

Fedorov, I ^{[1
]}

Reisler, H ^{[1
]}

机构：

[1] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 385卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.cplett.2003.12.092

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：

The photoexcitation of (NO)(2) at 242-221 nm is studied by photoion and photoelectron imaging. A broad and structureless absorption band starting at 41,300 +/- 300 cm(-1) is observed. Ionization via the excited state accesses predominantly a dissociative state of (NO)(2)(+). The broad kinetic energy distribution of the photoelectrons suggests that the excited state has a large valence component in the Franck-Condon region, and that the geometries of the excited neutral state and the dimer ion state differ markedly. We propose that the same 'bright' state of mixed valence/Rydberg character is accessed at 242-200 nm, in agreement with preliminary ab initio calculations. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：233 / 238

页数：6

共 28 条

[1] INVESTIGATION OF 2050 A SYSTEM OF NITRIC OXIDE DIMER [J].