ELECTRON-IMPACT SPECTRA OF METHANE, ETHANE, AND NEOPENTANE

被引：33

作者：

JOHNSON, KE ^{[1
]}

KIM, K ^{[1
]}

JOHNSTON, DB ^{[1
]}

LIPSKY, S ^{[1
]}

机构：

[1] UNIV MINNESOTA, DEPT CHEM, MINNEAPOLIS, MN 55455 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 1979年 / 70卷 / 05期

关键词：

D O I：

10.1063/1.437773

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：

Electron impact spectra of methane, ethane, and neopentane have been obtained at scattering angles of 0° and 90° and at impact energies from ≈30 to 250eV. The data are consistent with the lowest excitation in all of these systems to involve promotion of an electron to a 3s Rydberg-like orbital. Differences between 0° and 90° onsets are attributed to large-angle intensity enhancements oftransitions to the 3s Rydberg triplets. At 90° all of the spectra exhibit very similar intensity redistributions with strong enhancement of transitions in the 12-15 eV region as compared to lower-lying transitions. Assignments of the spectra and possible origins of the angular dependence are discussed. © 1979 American Institute of Physics.

引用

页码：2189 / 2197

页数：9

共 72 条

[1] EFFECT OF PRESSURE IN RADIOLYSIS + PHOTOLYSIS OF METHANE [J].