Invariant-embedding and cognate kinetic descriptions of particle reflection/emission from surfaces
Artikel i vetenskaplig tidskrift, 2007

The invariant-embedding (IE) approach, originally developed by Ambartsumyan and Chandrasekhar, is revisited in this paper. The unified derivation and description presented are geared to particle backscattering/emission from surfaces and contain earlier treatments as special cases of the arising general theory that embraces a large variety of bombarding particles and collision-cascade types. A particular new development concerns the relationship between the half-space and infinite-medium solutions in terms of the resolvent of the underlying transport operator. The infinite-medium reformulation of the IE approach gives rise to new equations that are more transparent, highlight fundamental relationships underlying various descriptions of reflection/emission kinetics, and are very flexible for further analytical transformations or numerical studies of the solutions. The general discussion is illustrated by explicit distributions characterizing elastic electron backscattering from a solid; an efficient and powerful calculation technique is discussed and exemplified by various resulting dependencies. (c) 2007 Published by Elsevier B.V.

ION-BOMBARDMENT

particle backscattering

half-spaces

infinite medium

SPATIAL-DISTRIBUTION

electron reflection

invariant embedding

MODEL

ENERGY

EQUATION

BACKSCATTERING

Författare

L. G. Glazov

Institute of High Current Electronics SB RAS

Imre Pazsit

Chalmers, Teknisk fysik, Nukleär teknik

Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

0168-583X (ISSN)

Vol. 256 638-658

Ämneskategorier

Annan teknik

DOI

10.1016/j.nimb.2006.12.192