Study of ion desorption induced by core-level excitations of condensed Si(CH3)(4) by using photoelectron-photoion coincidence spectroscopy (PEPICO) combined with synchrotron radiation

被引：10

作者：

Mase, K ^{[1
]}

Nagasono, M ^{[1
]}

Tanaka, S ^{[1
]}

Urisu, T ^{[1
]}

Nagaoka, S ^{[1
]}

机构：

[1] EHIME UNIV,FAC SCI,DEPT CHEM,MATSUYAMA,EHIME 79077,JAPAN

来源：

SURFACE SCIENCE | 1997年 / 377卷 / 1-3期

关键词：

Auger ejection; desorption induced by electronic transitions (DIET); photon stimulated desorption; tetramethylsilane; STIMULATED DESORPTION; EDGE;

D O I：

10.1016/S0039-6028(96)01421-5

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：

Photoelectron-photoion coincidence (PEPICO) spectra of condensed Si(CH3)(4) were measured with C 1s and the Si 2p photoelectrons using synchrotron radiation. H+ was found to be the only species desorbed in both cases. Furthermore, the H+ yield in coincidence with the C 1s photoemission was found to be three times as large as that with the Si 2p photoemission. These results indicate that the Auger-stimulated ion desorption mechanism is responsible for the H+ desorption, that the neutralization and recapture probabilities of the polyatomic ions are much larger than those of H+, and that the C 1s photoemission leads more efficiently to H+ desorption than the Si 2p photoemission.

引用

页码：376 / 379

页数：4

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