ZERO ELECTRON KINETIC-ENERGY PHOTOEMISSION OF CH4 AND CD4 AT THE CARBON K-IONIZATION THRESHOLD

被引：34

作者：

HEIMANN, PA ^{[1
]}

MEDHURST, LJ ^{[1
]}

SIGGEL, MRF ^{[1
]}

SHIRLEY, DA ^{[1
]}

CHEN, CT ^{[1
]}

MA, Y ^{[1
]}

SETTE, F ^{[1
]}

机构：

[1] AT&T BELL LABS,MURRAY HILL,NJ 07974

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 183卷 / 3-4期

关键词：

D O I：

10.1016/0009-2614(91)80056-4

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：

Zero electron kinetic energy (ZEKE) photoemission was applied to examine the vibrational fine structure in the C 1s core line of methane. The line broadening from the post collision interaction (PCI) could be understood using the threshold lineshape of atomic argon. From a Franck-Condon analysis of the CH4 and CD4 ZEKE spectra, the geometry of core-ionized methane was evaluated. The equilibrium bond length was determined to be contracted by 0.052(7) angstrom from the ground state of methane (1.085 angstrom). Our results agree with the X-ray photoelectron spectroscopy experiment of Gelius, showing in addition that the molecular structure determined from the vibrational structure in core-level photoemission does not depend on the photoelectron kinetic energy.

引用

页码：234 / 238

页数：5

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