Photofragmentation of C, F and SK-shell excited CF3SF5 studied by PEPICO and PIPICO spectroscopy

被引：14

作者：

Ibuki, T ^{[1
]}

Shimada, Y

Hashimoto, R

Nagaoka, S

Hino, M

Okada, K

Suzuki, IH

Morishita, Y

Tamenori, Y

机构：

[1] Kyoto Univ, Dept Mat Sci, Fushimi Ku, Kyoto 6128522, Japan

[2] Ehime Univ, Dept Chem, Matsuyama, Ehime 7908577, Japan

[3] Hiroshima Univ, Dept Chem, Higashihiroshima 7398526, Japan

[4] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

[5] Japan Synchrotron Radiat Res Inst, SPring8, Mikazuki, Hyogo 6795198, Japan

来源：

CHEMICAL PHYSICS | 2005年 / 314卷 / 1-3期

关键词：

soft x-ray photochemistry; photoionization; multiply charged ion; photoabsorption cross-section;

D O I：

10.1016/j.chemphys.2005.02.008

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 [物理化学]; 081704 [应用化学];

摘要：

Photodecomposition of K-shell excited CF3SF5 was investigated by means of photoelectron-photoion coincidence (PEPICO) and photoion-photoion coincidence (PIPICO) spectroscopy. In PEPICO mode to study site-selective fragmentation, the yield of CF3+ was high at the Cls -> sigma(CS)* excitation and that of SF3+ was considerable at the excitation into sigma(CF)*. When the F K-shell of SF5 was selectively excited, the formation of CF3+ was prominent. The atomic ions of S+ and F+ were overwhelmingly produced with some amounts of S2+ and S3+ ions at the S K-shell excitation. Formation of highly charged CF3SF5n+ (n = 2-4) ions was con firmed by PIPICO spectroscopy. The yields of CF3SF5n+ (n = 3,4) were low at the S1s -> sigma(*)(SF), excitation. Breakdown pathways of the CF3SF5n+ ions were discussed. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：119 / 126

页数：8

共 25 条

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Fragmentation of energy-selected SF5CF3+ probed by threshold photoelectron photoion coincidence spectroscopy:: Bond dissociation energy of SF5-CF3 and its atmospheric implications [J].