EXTREME ULTRAVIOLET PHOTODISSOCIATION OF O2 VIA THE FREE (C4-SIGMA-U-)3S-SIGMA-G STATE AS PROBED BY DISPERSED VACUUM ULTRAVIOLET FLUORESCENCE

被引：29

作者：

UKAI, M ^{[1
]}

KOUCHI, N ^{[1
]}

KAMETA, K ^{[1
]}

TERAZAWA, N ^{[1
]}

CHIKAHIRO, Y ^{[1
]}

HATANO, Y ^{[1
]}

TANAKA, K ^{[1
]}

机构：

[1] NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,OHO,IBARAKI 306,JAPAN

来源：

CHEMICAL PHYSICS LETTERS | 1992年 / 195卷 / 04期

关键词：

D O I：

10.1016/0009-2614(92)85606-B

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：

Dispersed vacuum ultraviolet (VUV) fluorescence spectra of neutral fragments formed in the extreme ultraviolet photodissociation of O2 and their excitation spectra at the incident synchrotron radiation (SR) wavelength of 57-85 nm have been obtained using a secondary VUV monochromator to clarify the dissociation mechanism of O2 in superexcited states. The VUV fluorescence from dissociation fragments has been observed at the lowest dissociation limits of O(n(l)) + O(3P). The dissociation of the Rydberg states converging on the O2+(b4-SIGMA(g)-) and O2+(B2-SIGMA(g)-) states has been shown to prefer dissociation limits higher than the lowest limit of O(3s3S)+O(3P) via multichannel crossing. An intensity enhancement in the O(3s3S-->3P) fluorescence excitation spectrum (FES) around the incident wavelength of 58 nm has been explained by the direct dissociation of the free (c4-SIGMA(u)-)3s-sigma(g) state.

引用

页码：298 / 302

页数：5

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