Phys. Rev. Lett. 50, 1149–1152 (1983)Reemitted-Positron Energy-Loss Spectroscopy: A Novel Probe of Adsorbate Vibrational LevelsReceived 17 December 1982; published in the issue dated 11 April 1983 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(2×2)CO at room temperature, energy-loss peaks are found at ∼ 57 and ∼ 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. © 1983 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.50.1149
DOI:
10.1103/PhysRevLett.50.1149
PACS:
68.30.+z, 61.14.-x
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