The role of autoionization in molecular oxygen

被引：5

作者：

Cubric, D

Willis, AA

Comer, J

Hammond, P

机构：

[1] Department of Physics and Astronomy, University of Manchester

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1996年 / 29卷 / 18期

关键词：

D O I：

10.1088/0953-4075/29/18/011

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Photoelectron spectra of the O-2(+) ground-state have been measured as a function of photon energy from 14.75 to 15.05 eV with monochromatic synchrotron radiation and a spectrometer incorporating a state of the art position-sensitive detector. The results cover the first 13 vibrational levels of the X(2)II(g) ionic state and show a strong influence of the decay of the (IIu)-I-3 neutral autoionizing states I, I' and I''. A comparison is made between the observed spectra and a model calculation which includes both direct and resonant mechanisms for the population of the ionic states. Based on Morse type potential curves the inter-nuclear spacing, r(e) for the I, I' and I'' states were determined to be 1.380(3), 1.380(3) and 1.390(5) Angstrom, respectively. Some limitations of the comparison are discussed.

引用

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页码：4151 / 4160

页数：10

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