Critical analysis of the modified firsov model. sensitivity to the choice of atomic wavefunctions
- 1 January 1979
- journal article
- research article
- Published by Taylor & Francis in Radiation Effects
- Vol. 43 (3) , 79-84
- https://doi.org/10.1080/01422447908226474
Abstract
The Firsov model for calculating the low-velocity e-lectronic stopping power (Se) as modified by Cheshire, et al, is found to be extremely sensitive to the choice of atomic wave functions (ψ) when a minimum impact parameter is used in the calculations. Differences of a factor of ≃2 are observed, for example, between the predicted value of Se using a minimal basis set for ψ and the value obtained using an extended basis set. A systematic analysis to reduce the sources of uncertainty in calculations of S e is proposed in order to have a unified set of criteria regarding the predictions of the theory.Keywords
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