Atomic process modeling in dense hydrogenic plasmas by nearest neighbor approximation

Research output: Contribution to journalArticle

Abstract

Atomic process modelling for obtaining the electronic state densities of the bound and free electrons and calculating the resulting average ionization degrees of dense hydrogenic plasmas is studied. In the analysis of atomic processes in plasmas, the Saha equation is usually solved to obtain population of each ionic species of various electronic configurations and resulting average ionization degrees as a function of electron temperature and plasma density under the assumption that the plasmas are in a certain equilibrium, for example, the thermodynamic equilibrium. I had proposed an atomic model based on the nearest neighbor approximation to determine a finite state density of the bound state and a state density of the free electron in hydrogenic plasmas. Using the models, we had been able to calculate the population for ions of various electronic configurations in hydrogenic plasmas without any ad hoc parameters to determine the electronic state densities. Unfortunately, the models had not been able to apply for dense plasmas near solid density. In this paper, examining the effect of the Coulomb interaction between the two ions and the Saha equation, we discuss the applicability of the models for dense hydrogenic plasmas.

Original languageEnglish
Article number012077
JournalJournal of Physics: Conference Series
Volume688
Issue number1
DOIs
Publication statusPublished - Apr 1 2016

Fingerprint

dense plasmas
approximation
Saha equations
electronics
free electrons
ionization
thermodynamic equilibrium
configurations
plasma density
ions
electron energy
electrons
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Atomic process modeling in dense hydrogenic plasmas by nearest neighbor approximation. / Nishikawa, Takeshi.

In: Journal of Physics: Conference Series, Vol. 688, No. 1, 012077, 01.04.2016.

Research output: Contribution to journalArticle

@article{514f5bc5434a4e6f9545dff94f1ad138,
title = "Atomic process modeling in dense hydrogenic plasmas by nearest neighbor approximation",
abstract = "Atomic process modelling for obtaining the electronic state densities of the bound and free electrons and calculating the resulting average ionization degrees of dense hydrogenic plasmas is studied. In the analysis of atomic processes in plasmas, the Saha equation is usually solved to obtain population of each ionic species of various electronic configurations and resulting average ionization degrees as a function of electron temperature and plasma density under the assumption that the plasmas are in a certain equilibrium, for example, the thermodynamic equilibrium. I had proposed an atomic model based on the nearest neighbor approximation to determine a finite state density of the bound state and a state density of the free electron in hydrogenic plasmas. Using the models, we had been able to calculate the population for ions of various electronic configurations in hydrogenic plasmas without any ad hoc parameters to determine the electronic state densities. Unfortunately, the models had not been able to apply for dense plasmas near solid density. In this paper, examining the effect of the Coulomb interaction between the two ions and the Saha equation, we discuss the applicability of the models for dense hydrogenic plasmas.",
author = "Takeshi Nishikawa",
year = "2016",
month = "4",
day = "1",
doi = "10.1088/1742-6596/688/1/012077",
language = "English",
volume = "688",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - Atomic process modeling in dense hydrogenic plasmas by nearest neighbor approximation

AU - Nishikawa, Takeshi

PY - 2016/4/1

Y1 - 2016/4/1

N2 - Atomic process modelling for obtaining the electronic state densities of the bound and free electrons and calculating the resulting average ionization degrees of dense hydrogenic plasmas is studied. In the analysis of atomic processes in plasmas, the Saha equation is usually solved to obtain population of each ionic species of various electronic configurations and resulting average ionization degrees as a function of electron temperature and plasma density under the assumption that the plasmas are in a certain equilibrium, for example, the thermodynamic equilibrium. I had proposed an atomic model based on the nearest neighbor approximation to determine a finite state density of the bound state and a state density of the free electron in hydrogenic plasmas. Using the models, we had been able to calculate the population for ions of various electronic configurations in hydrogenic plasmas without any ad hoc parameters to determine the electronic state densities. Unfortunately, the models had not been able to apply for dense plasmas near solid density. In this paper, examining the effect of the Coulomb interaction between the two ions and the Saha equation, we discuss the applicability of the models for dense hydrogenic plasmas.

AB - Atomic process modelling for obtaining the electronic state densities of the bound and free electrons and calculating the resulting average ionization degrees of dense hydrogenic plasmas is studied. In the analysis of atomic processes in plasmas, the Saha equation is usually solved to obtain population of each ionic species of various electronic configurations and resulting average ionization degrees as a function of electron temperature and plasma density under the assumption that the plasmas are in a certain equilibrium, for example, the thermodynamic equilibrium. I had proposed an atomic model based on the nearest neighbor approximation to determine a finite state density of the bound state and a state density of the free electron in hydrogenic plasmas. Using the models, we had been able to calculate the population for ions of various electronic configurations in hydrogenic plasmas without any ad hoc parameters to determine the electronic state densities. Unfortunately, the models had not been able to apply for dense plasmas near solid density. In this paper, examining the effect of the Coulomb interaction between the two ions and the Saha equation, we discuss the applicability of the models for dense hydrogenic plasmas.

UR - http://www.scopus.com/inward/record.url?scp=84964878023&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84964878023&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/688/1/012077

DO - 10.1088/1742-6596/688/1/012077

M3 - Article

AN - SCOPUS:84964878023

VL - 688

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012077

ER -