Effect of quenching in resonant coherent excitation of hydrogen atoms scattered from LiF surfaces
Lugovskoy, A. and Bray, I. (2003) Effect of quenching in resonant coherent excitation of hydrogen atoms scattered from LiF surfaces. Physical Review A - Atomic, Molecular, and Optical Physics, 67 (3). Article number 032901.
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In this paper we analyze theoretically the “signal background” observed in experimental studies of the radiative decay of hydrogen atoms following resonant coherent excitation (RCE) in grazing collisions with a LiF surface. The radiation intensity is evaluated by treating the RCE within a time-dependent (classical-trajectory) quantal approach, and by assuming that the excited electronic states are quenched whenever the atom-surface distance drops below a certain “switching distance.” Associating the mechanism of excited-state quenching with the charge transfer to the LiF conduction band we show that the hereto unexplained signal background can be attributed to the dependence of the switching distance on the incident energy.
|Publication Type:||Journal Article|
|Murdoch Affiliation:||School of Mathematical and Physical Sciences|
|Publisher:||The American Physical Society|
|Copyright:||© 2003 The American Physical Society|
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