Accession Number : ADA189090

Title :   Identification of Satellites due to Resonant Excitation and Shakeoff in the C KVV Auger Lineshapes of Several Gas Phase Hydrocarbons.

Descriptive Note : Interim technical rept.,

Corporate Author : GEORGE WASHINGTON UNIV WASHINGTON D C DEPT OF CHEMISTRY

Personal Author(s) : Hutson, F. L. ; Ramaker, David E.

Report Date : DEC 1987

Pagination or Media Count : 32

Abstract : We have consistantly interpreted the C KVV Auger lineshapes of five hydrocarbons (methane, ethane, cyclohexane, benzene, and ethylene) and compared the results with those previously reported for three different solids (polyethylene, diamond, and graphite). We show that an interpretation procedure normally used for solids, namely, a self-fold of the one-electron DOS and incorporation of hole-hole correlation effects utilizing the Cini expression, is also adequate for molecules, and thus direct comparison of the gas phase and solid phase is possible. The results indicate that long range polarization effects are not important in the extended solids, however short range pi electron screening is important in the alkenes and in graphite. Keywords: Auger spectroscopy, Hydrocarbons, Core hole screening.

Descriptors :   *AUGER ELECTRON SPECTROSCOPY, *BENZENE, *CYCLOHEXANES, *ETHANES, *ETHYLENE, ALKENES, COMPARISON, ELECTRONS, EXCITATION, GRAPHITE, HYDROCARBONS, IDENTIFICATION, LONG RANGE(TIME), METHANE, MOLECULES, POLARIZATION, POLYETHYLENE, RESONANCE, SHORT RANGE(DISTANCE), SOLID PHASES, SOLIDS, VAPOR PHASES, REPRINTS.

Subject Categories : Organic Chemistry
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE