APS » PROLA » Phys. Rev. Lett. » Volume 65 » Issue 25

Phys. Rev. Lett. 65, 3156 - 3159 (1990)

Excitation of electrons from an Al surface by grazing-angle-incident fast heavy ions
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A. Koyama and Y. Sasa
The Institute of Physical and Chemical Research, Hirosawa 2-1, Wako-shi, Saitama 351-01, Japan

H. Ishikawa and A. Misu
Science University of Tokyo, Kagurazaka 1-3, Shinjuku-ku, Tokyo 162, Japan

K. Ishii
Tohoku University, Aramaki, Aoba, Sendai-shi, Miyagi 980, Japan

T. Iitaka, Y. H. Ohtsuki, and M. Uda
Waseda University, Ookubo 3-4-1, Shinjuku-ku, Tokyo 169, Japan

Received 14 June 1990

Measurements were made, at various emission angles, of energy spectra of electrons from Al induced by grazing-angle-incident ions of N6+, Ar12+, and Xe27+ with equal velocities corresponding to 0.98 MeV/amu. A new line which could not be explained by any of the hitherto identified mechanisms was observed at an energy obviously larger than that of an electron with a velocity equal to the projectile. The projectile and emission angle dependencies of the line are consistent with the dynamic image potential acceleration mechanism.


©1990 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v65/p3156
DOI: 10.1103/PhysRevLett.65.3156
PACS: 79.20.Nc, 79.20.Rf

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