Electronic diffusion coefficient for fast-ion dechanneling
- 1 December 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 34 (11) , 7549-7553
- https://doi.org/10.1103/physrevb.34.7549
Abstract
A new local electronic diffusion coefficient for fast-ion dechanneling is derived on the basis of the fundamental method. To reveal detailed effects of electron states, numerical calculations are performed with use of the Roothaan-Hartree-Fock atomic wave functions. It is found that the Lindhard’s formula of the electronic diffusion coefficient, which is proportional to the local electron density, is only a simple approximation of our rigorous formula and that this ‘‘local-density approximation’’ is not always sufficient, especially for metal targets.Keywords
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