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Theory of the lonization Equilibrium in Dense Plasmas

✍ Scribed by Prof. Dr. W. Ebeling; R. Sändig

Publisher
John Wiley and Sons
Year
1973
Tongue
English
Weight
819 KB
Volume
483
Category
Article
ISSN
0003-3804

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✦ Synopsis

Abstract

The SAHA equation for the ionization equilibrium in plasmas is analyzed. Especially the balance between the effect of bound states (mass action constant) and the effect of free states (lowering of the ionization energy) is investigated.

The lowering of the ionization energy is represented as an expansion with respect to the density. It is shown that the coefficients of this expansion and the mass action constant are connected with the known quantum statistical virial coefficients. The question of introducing the energy levels of a screened COULOMB potential is investigated. Several possibilities for the choice of the weight factor in the mass action constant are discussed. In the case of higher densities PADÉ approximations for the ionization energy are constructed. The existence of instabilities of the NORMAN‐STAROSTIN‐type is discussed.

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