K-shell photoabsorption edge of a dense aluminum plasma

Godwal, B. K. ; Ng, A. ; Da Silva, L. ; Lee, Y. T. ; Liberman, D. A. (1989) K-shell photoabsorption edge of a dense aluminum plasma Physical Review A, 40 (8). pp. 4521-4526. ISSN 1050-2947

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Official URL: http://pra.aps.org/abstract/PRA/v40/i8/p4521_1

Related URL: http://dx.doi.org/10.1103/PhysRevA.40.4521


A theoretical model for the calculation of the K-shell photoabsorption edge in a dense plasma is described. In the model, degeneracy and continuum lowering contributions due to free electrons and neighboring ions were treated as perturbations on the continuum and the bound state. These contributions were evaluated using first-principles solid-state methods. The model was used to interpret recently observed shifts in the K-shell photoabsorption-edge energy in shock-compressed aluminum. The validity of the model was further examined through comparisons with two average-atom, self-consistent-field calculations and an augmented-plane-wave calculation.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:11688
Deposited On:13 Nov 2010 14:03
Last Modified:02 Jun 2011 09:46

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