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Asian Journal of Research and Reviews in Physics, ..,Vol.: 1, Issue.: 2

Original-research-article

Comparison of Iron Plasma Atomic and Radiative Properties Computed with a Relativistic Collisional Radiative Average Atom Code versus Other Models

 

A. J. Benita1,2*

1Plasma Atomic Physics Group, Madrid Polytechnic University, 28006 Madrid, Spain.

2Department of Physics, Las Palmas Canary Islands University, 35017 Las Palmas de Gran Canaria, Spain.

Article Information

Editor(s):

(1) Vitalii A. Okorokov,  Professor, Department of Physics, National Research Nuclear University MEPhI, (Moscow Engineering Physics Institute) – NRNU MEPhI, Moscow, Russia.

Reviewers:

(1) Pain Jean-Christophe, France.

(2) Hulin Huang, Nanjing University of Aeronautics and Astronautics, P.R. China.

Complete Peer review History: http://www.sciencedomain.org/review-history/24863

Abstracts

In this paper, it is presented a representative sample of steady state iron plasmas focusing the attention on two issues. First, the huge computation capability extension up to millions of plasmas with the implementation of a collisional radiative balance in the relativistic average atom model ATMED. Second, it will be addressed the good agreement of atomic and radiative properties not only with respect to very recent experimental measurements of laboratories and High Energy Density facilities, but also to the last theoretical developments in quantum mechanics of statistical methods, as new codes based on the self consistent Hartree-Fock-Slater model for the average atom which in turn solve the Schrödinger’s or Dirac’s equations of radial wave functions. The new codes have been validated with some state of the art models as OPAL, SCO-RCG, STA, CASSANDRA, LEDCOP, THERMOS, etc.

The results for plasma properties can be considered as relatively precise and optimal, being checked fundamentally the high sensitivity of calculations to changes in regime, local thermodynamic equilibrium (LTE) or non-LTE (NLTE), electronic and radiation temperatures, dilution factor, matter or electronic density and plasma length. The systematic theoretical investigation is carried out through comparison of calculations performed with a wide set of atomic collisional radiative codes with detailed configurations or codes of the average atom formalism. Some transmissions computed with ATMED CR using UTA (Unresolved Transition Array) formalism are also checked with respect to very recent experimental measurements of laboratories.

Keywords :

Screened hydrogenic atomic model; collisional radiative average atom code; steady state iron plasmas; wide thermodynamic ranges.

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