Accession Number : ADA203232

Title :   Attenuation Lengths of Photoelectrons in Hydrocarbon Films.

Descriptive Note : Interim technical rept.,

Corporate Author : HARVARD UNIV CAMBRIDGE MASS DEPT OF CHEMISTRY

Personal Author(s) : Bain, Colin D. ; Whitesides, George M.

Report Date : OCT 1988

Pagination or Media Count : 27

Abstract : The attenuation length, lambda, of photoelectrons with energies in the range 900-1400 eV in hydrocarbon films was measured using self-assembled monolayers of alkanethiols, HSCnH2n+1, on gold. The intensity of the photoelectron peaks from the gold substrate decreased exponentially with the chain length, with attenuation lengths of 42 A at 1402 eV, 34 A at 1151 eV, and 28 A at 940 eV. Over the narrow energy range studied, lambda was directly proportional to the kinetic energy of the photoelectrons. Keywords: Photoelectron spectroscopy; Attenuation lengths; Monomolecular films; Self assembly; Gold; Alkanethiols. (jhd)

Descriptors :   *THIOLS, *ALKENES, *ATTENUATION, *PHOTOELECTRON SPECTRA, *PHOTOELECTRONS, ENERGY, FILMS, GOLD, HYDROCARBONS, KINETIC ENERGY, LENGTH, MONOMOLECULAR FILMS, SUBSTRATES.

Subject Categories : Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE