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Reemitted-positron energy-loss spectroscopy: A novel probe of adsorbate vibrational levels

Journal Article · · Phys. Rev. Lett.; (United States)
Vibrational excitations of carbon monoxide on Ni(100) have been observed for the first time in the energy-loss spectrum of reemitted positrons. For Ni(100)c(2 x 2)CO at room temperature energy-loss peaks are found at approx.57 and approx.248 meV, corresponding to Ni-C and C-O stretching vibrations, respectively. These peak positions are in good agreement with previously reported results for electron energy-loss spectroscopy. Anticipated improvements in resolution promise to make reemitted-positron energy-loss spectroscopy competitive with high-resolution electron energy-loss spectroscopy.
Research Organization:
Brookhaven National Laboratory, Upton, New York 11973
DOE Contract Number:
AC02-76CH00016
OSTI ID:
6098878
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 50:15; ISSN PRLTA
Country of Publication:
United States
Language:
English