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Stopping power for energetic heavy ions in a high temperature material

Published online by Cambridge University Press:  09 March 2009

Shosuke Karashima  and
Tsutomu Watanabe
Shosuke Karashima
Affiliation:
Department of Electrical Engineering, Science University of Tokyo, Kagurazaka, Sinjukuku, Tokyo 162, Japan
Tsutomu Watanabe
Affiliation:
Department of Electrical Engineering, Science University of Tokyo, Kagurazaka, Sinjukuku, Tokyo 162, Japan
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Abstract

Theoretical treatments of the stopping power are reviewed and problems necessary to extend these treatments to high temperature and high density materials are discussed. Physically important parameters which govern the stopping power properties are indicated. The average equilibrium charge for a gaseous medium is one of the important parameters in the stopping power and the charge-exchange processes involved are discussed. The effective charge is described in terms of a relation between the average equilibrium charge and the effective charge. The atomic energy levels for high density and high temperature matter are also included in the stopping power formula.

Actual calculations of the stopping power are made for Pb ions passing through the HIBLIC-target. Range profiles are estimated for Xe and U ions in an ionized Al target for temperatures T = 0 to T = 1290 eV using the Brueckner, Senbetu & Metzler (1982) theory based on a dielectric response function. Results are compared with those of Northcliffe & Schilling (1970), Ziegler (1980), and Hubert et al. (1980). In order to include dynamic local-field corrections in the dielectric function, a model is proposed similar to a two component plasma.

Type
Research Article
Information
Laser and Particle Beams , Volume 5 , Issue 3 , August 1987 , pp. 525 - 536
Copyright
Copyright © Cambridge University Press 1987

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