Atomic kinetics calculations of complex highly-charged ions in plasmas in non-local thermodynamic equilibrium by using a Monte-Carlo approach

Akira Sasaki; Richard M. More; Keisuke Fujii; Daiji Kato; Izumi Murakami

doi:10.1016/j.hedp.2019.04.005

Atomic kinetics calculations of complex highly-charged ions in plasmas in non-local thermodynamic equilibrium by using a Monte-Carlo approach

Akira Sasaki, Richard M. More, Keisuke Fujii, Daiji Kato, Izumi Murakami

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A new calculation of atomic kinetics of multiple-charged tungsten ions in a high temperature plasma in the non-local thermodynamic equilibrium (nLTE) based on the Markov chain Monte-Carlo (MCMC) method is presented. It is shown that the fractional ion abundance and the resulting mean charge of the plasma can be calculated with much lower computational time compared to conventional methods. The present method can be easily parallelized and is applicable to larger problems, such as modeling coupled atomic processes and radiation hydrodynamics.

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	High Energy Density Physics
Volume	32
DOIs	https://doi.org/10.1016/j.hedp.2019.04.005
State	Published - Jul 2019
Externally published	Yes

Funding

This work is supported by the JSPS grant no. 16H04623 and no. 18H01201 . This work is also supported by the general collaboration project of the National Institute for Fusion Science (NIFS), and by the NINS program of Promoting Research by Networking among Institutions (Grant Number 01411702 ). The author A.S. acknowledges supports from Dr. Nishikino, Dr. Kondoh, and Dr. Kawachi of the Kansai Photon Science Institute of National Institutes for Quantum and Radiological Science and Technology.

Funders	Funder number
Japan Society for the Promotion of Science	16H04623, 18H01201
National Institutes of Natural Sciences
National Institute for Fusion Science	01411702

Keywords

Atomic process
Collisional radiative model
Highly charged ion

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10.1016/j.hedp.2019.04.005

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abstract = "A new calculation of atomic kinetics of multiple-charged tungsten ions in a high temperature plasma in the non-local thermodynamic equilibrium (nLTE) based on the Markov chain Monte-Carlo (MCMC) method is presented. It is shown that the fractional ion abundance and the resulting mean charge of the plasma can be calculated with much lower computational time compared to conventional methods. The present method can be easily parallelized and is applicable to larger problems, such as modeling coupled atomic processes and radiation hydrodynamics.",

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AU - Kato, Daiji

AU - Murakami, Izumi

PY - 2019/7

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AB - A new calculation of atomic kinetics of multiple-charged tungsten ions in a high temperature plasma in the non-local thermodynamic equilibrium (nLTE) based on the Markov chain Monte-Carlo (MCMC) method is presented. It is shown that the fractional ion abundance and the resulting mean charge of the plasma can be calculated with much lower computational time compared to conventional methods. The present method can be easily parallelized and is applicable to larger problems, such as modeling coupled atomic processes and radiation hydrodynamics.

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KW - Highly charged ion

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JO - High Energy Density Physics

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ER -

Atomic kinetics calculations of complex highly-charged ions in plasmas in non-local thermodynamic equilibrium by using a Monte-Carlo approach

Abstract

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Keywords

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