Stability of contact discontinuities in electrostatic hybrid-and full-vlasov simulations

Naru Tsujine, Takayuki Haruki, Takayuki Umeda, Yasuhiro Nariyuki, Masahiro Sato

研究成果: ジャーナルへの寄稿学術論文査読

抄録

The stability of contact discontinuities was studied by means of one-dimensional electrostatic (ES) hybridand full-Vlasov simulations with the initial parameter based on observational data. The ES hybrid-Vlasov simulations show that the sharp gradient of the ion number density is generated at the early stage and is subsequently maintained for a long term. On the other hand, the sharp gradient is absent in the ES full-Vlasov simulation. The generalized Ohm's law shows that the electron pressure gradient accounts for the electric field on the ion time scale in both ES hybrid-and full-Vlasov simulations. It is shown that there is a difference in the time evolution of the electron pressure between the ES hybrid-and full-Vlasov simulations, which is mainly caused by the electron heat flux.

本文言語英語
論文番号1002
ジャーナルPlasma and Fusion Research
15
DOI
出版ステータス出版済み - 2020

ASJC Scopus 主題領域

  • 凝縮系物理学

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