Accession Number : ADA189092

Title :   An Interpretation of the Ethylenic, Carbidic, and Graphite Auger Lineshapes of Chemisorbed Carbon Species.

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

PDF Url : ADA189092

Report Date : Dec 1987

Pagination or Media Count : 5

Abstract : Recently, Koel reported the C KVV Auger lineshapes for Ethylene on nickel(100) at a temperature of 100 K and for the decomposition products at 250, 300, and 600 K. We present detailed interpretations of these lineshapes, as well as for other previously reported carbidic and graphitic lineshapes. The most significant results of this work can be summarized briefly as follows: (1) Although the lineshapes for the chemisorbed and comparable gas phase species are similar, they are composed of very different principal and satellite contributions; and (2) The Auger intensity arising from carbon hydrogen much higher two-hole binding energy than that from C-M (metal) bonds. Thus the amount of C-H and C-M bond character is seen to remain even at 600 K on the Ni(100) surface. Keywords: Auger Spectroscopy; Carbides; Graphite.

Descriptors :   *AUGER ELECTRON SPECTROSCOPY, *CARBON, *GRAPHITE, *NICKEL, HYDROGEN, INTENSITY, VAPOR PHASES

Subject Categories : Inorganic Chemistry
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE