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Persistent URL	http://purl.org/net/epubs/work/36151
Record Status	Checked
Record Id	36151
Title	Inelastic energy loss in 100-keV H+ scattering from single atoms : theory and experiment for K, Rb and Cs
Contributors	A Hentz (Universidade Federal do Rio Grande do Sul, Brasil), GS Parkinson (Warwick U.), A Window (Warwick U.), DP Woodruff (Warwick U.), PL Grande (Universidade Federal do Rio Grande do Sul, Brasil), G Schiwietz (Hahn-Meitner-Institut), P Bailey (CCLRC Daresbury Lab.), TCQ Noakes (CCLRC Daresbury Lab.)
Abstract	The energy-loss spectrum associated with scattering of 100-keV H+ ions from K, Rb, and Cs atoms adsorbed on Al 111 has been investigated both experimentally and theoretically. Theoretical simulations were conducted based on calculations of the energy loss experienced in specific ion trajectories at the surface, using coupled-channel calculations to describe inner-shell ionization and excitation as a function of impact parameter. The energy losses can be attributed entirely to single atomic collisions from the alkali atoms, and the experiments reproduce the markedly increased asymmetry in scattering from Rb and Cs relative to K, attributable largely to the role of 3d and 4d excitations, respectively, and particularly the role of multiple excitations of these states. For Rb and Cs scattering, the data show excellent quantitative agreement between theory and experiment; for the K scattering, a discrepancy of a low-energy shoulder is attributed to a problem ssociated with the sample preparation.
Organisation	CCLRC , MEIS
Keywords	Physics
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Journal Article	Phys Rev B 74 (2006): 125408.	doi:10.1103/PhysRevB.74.125408		2006