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Title: Interplay of charge exchange and energy loss of 0.67--1.5-MeV He ions specularly reflected from a crystal surface

Abstract

Charge-state distributions and energy losses of 0.67--1.5-MeV He ions scattered from a clean (100) surface of a SnTe single crystal are studied at glancing-angle incidence under UHV conditions. A stochastic model of charge exchange and energy loss of ions is developed, where inelastic interactions depend on the distance of the ion from the surface. Observed charge-state fractions and energy losses of the reflected He ions are explained with the model. Taking account of scattering of ions at surface steps, which causes the deflection of ion trajectories, position-dependent charge-exchange probabilities of He ions near the surface are derived from the observed charge-state distributions and charge-state dependence of the energy losses of scattered He ions.

Authors:
; ; ; ;  [1]
  1. Department of Engineering Science, Kyoto University, Kyoto 606-01 (Japan)
Publication Date:
OSTI Identifier:
142639
Resource Type:
Journal Article
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 49; Journal Issue: 3; Other Information: PBD: Mar 1994
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; HELIUM IONS; SCATTERING; TIN TELLURIDES; ION COLLISIONS; MEV RANGE 01-10; INCIDENCE ANGLE; CHARGE EXCHANGE; ENERGY LOSSES; CHARGE STATES; SPACE DEPENDENCE; MONOCRYSTALS; KEV RANGE 100-1000; ULTRAHIGH VACUUM

Citation Formats

Fujii, Y., Fujiwara, S., Narumi, K., Kimura, K., and Mannami, M. Interplay of charge exchange and energy loss of 0.67--1.5-MeV He ions specularly reflected from a crystal surface. United States: N. p., 1994. Web. doi:10.1103/PhysRevA.49.1897.
Fujii, Y., Fujiwara, S., Narumi, K., Kimura, K., & Mannami, M. Interplay of charge exchange and energy loss of 0.67--1.5-MeV He ions specularly reflected from a crystal surface. United States. doi:10.1103/PhysRevA.49.1897.
Fujii, Y., Fujiwara, S., Narumi, K., Kimura, K., and Mannami, M. Tue . "Interplay of charge exchange and energy loss of 0.67--1.5-MeV He ions specularly reflected from a crystal surface". United States. doi:10.1103/PhysRevA.49.1897.
@article{osti_142639,
title = {Interplay of charge exchange and energy loss of 0.67--1.5-MeV He ions specularly reflected from a crystal surface},
author = {Fujii, Y. and Fujiwara, S. and Narumi, K. and Kimura, K. and Mannami, M.},
abstractNote = {Charge-state distributions and energy losses of 0.67--1.5-MeV He ions scattered from a clean (100) surface of a SnTe single crystal are studied at glancing-angle incidence under UHV conditions. A stochastic model of charge exchange and energy loss of ions is developed, where inelastic interactions depend on the distance of the ion from the surface. Observed charge-state fractions and energy losses of the reflected He ions are explained with the model. Taking account of scattering of ions at surface steps, which causes the deflection of ion trajectories, position-dependent charge-exchange probabilities of He ions near the surface are derived from the observed charge-state distributions and charge-state dependence of the energy losses of scattered He ions.},
doi = {10.1103/PhysRevA.49.1897},
journal = {Physical Review A},
number = 3,
volume = 49,
place = {United States},
year = {1994},
month = {3}
}