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Invariant-embedding and cognate kinetic descriptions of particle reflection/emission from surfaces

L. G. Glazov ; Imre Pázsit (Institutionen för teknisk fysik, Nukleär teknik)
Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms (0168-583X). Vol. 256 (2007), 2, p. 638-658.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: invariant embedding, particle backscattering, electron reflection, half-spaces, infinite medium, SPATIAL-DISTRIBUTION, ION-BOMBARDMENT, ENERGY, BACKSCATTERING, EQUATION, MODEL

Denna post skapades 2008-11-07. Senast ändrad 2014-09-02.
CPL Pubid: 77280


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Institutioner (Chalmers)

Institutionen för teknisk fysik, Nukleär teknik (2006-2015)


Teknisk fysik

Chalmers infrastruktur