An expression for the charge-deposition distribution near the surface of a semi-infinite medium irradiated by electrons

Author

Alouani-Bibi, P. ; Lazurik, V.T. ; Rogov, Yu.V. ; Tabata, T.

Author_Institution

Radiat. Phys. Lab., Kharkov State Univ., Ukraine

Volume

46

Issue

3

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

280

Lastpage

283

Abstract

On the basis of the characteristics of electron transport, a semiempirical model has been developed to describe the charge-deposition distribution due to knock-on electrons produced by electron-electron interactions near the surface of a semi-infinite medium. A criterion is provided for the thickness of the zone near the surface where the charge deposition is essentially due to knock-on electrons. A comparison between the charge-deposition distributions obtained by the Monte Carlo method and the present model is made in the above zone. The absorber materials considered are Be, C, Al and Cu, and the energies of incident electrons are from 1 to 10 MeV. The advantages and limitations of the present model in comparison with other analytic expressions are discussed

Keywords

aluminium; beryllium; carbon; copper; electron transport theory; secondary electron emission; 1 to 10 MeV; Al; Be; C; Cu; Monte Carlo method; absorber materials; charge-deposition distribution; electron transport; electron-electron interactions; knock-on electrons; semi-infinite medium; Atomic layer deposition; Charge carrier processes; Electron sources; Equations; Laboratories; Physics; Production; Slabs;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.775528

Filename

775528