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Calculation of the ionization state for LTE plasmas using a new relativistic-screened hydrogenic model based on analytical potentials

Published online by Cambridge University Press:  05 August 2002

J.G. RUBIANO ,
R. RODRÍGUEZ ,
J.M. GIL ,
P. MARTEL  and
E. MÍNGUEZ
J.G. RUBIANO
Affiliation:
Departamento de Física, Universidad de Las Palmas de G.C., Campus de Tafira, 35017 Las Palmas de Gran Canaria, Spain Instituto de Fusión Nuclear, Universidad Politécnica de Madrid, José Gutiérrez Abascal, 2, 28006 Madrid, Spain
R. RODRÍGUEZ
Affiliation:
Departamento de Física, Universidad de Las Palmas de G.C., Campus de Tafira, 35017 Las Palmas de Gran Canaria, Spain Instituto de Fusión Nuclear, Universidad Politécnica de Madrid, José Gutiérrez Abascal, 2, 28006 Madrid, Spain
J.M. GIL
Affiliation:
Departamento de Física, Universidad de Las Palmas de G.C., Campus de Tafira, 35017 Las Palmas de Gran Canaria, Spain Instituto de Fusión Nuclear, Universidad Politécnica de Madrid, José Gutiérrez Abascal, 2, 28006 Madrid, Spain
P. MARTEL
Affiliation:
Departamento de Física, Universidad de Las Palmas de G.C., Campus de Tafira, 35017 Las Palmas de Gran Canaria, Spain Instituto de Fusión Nuclear, Universidad Politécnica de Madrid, José Gutiérrez Abascal, 2, 28006 Madrid, Spain
E. MÍNGUEZ
Affiliation:
Instituto de Fusión Nuclear, Universidad Politécnica de Madrid, José Gutiérrez Abascal, 2, 28006 Madrid, Spain
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Abstract

In this work, the Saha equation is solved using atomic data provided by means of a new relativistic-screened hydrogenic model based on analytical potentials to calculate the ionization state and ion abundance for LTE iron plasmas. The plasma effects on the atomic structure are taken into account by including the classical continuum lowering correction of Stewart and Pyatt. For high density, the Saha equation is modified to consider the degeneration of free electrons using the Fermi–Dirac statistics instead of the Maxwellian distribution commonly used. The results are compared with more sophisticated self-consistent codes.

Keywords

Analytical potentialsAtomic modelsIonization statePhysic of dense plasmasScreened hydrogenic model
Type
Research Article
Information
Laser and Particle Beams , Volume 20 , Issue 1 , January 2002 , pp. 145 - 151
Copyright
© 2002 Cambridge University Press

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