Open AccessNumerical investigations of Z-pinch plasma instabilities
Author(s) -
Duan Yao-Yong,
Guo Yong-Hui,
Wensheng Wang,
Aici Qiu
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.3429
Subject(s) - implosion , physics , instability , pinch , plasma , perturbation (astronomy) , z pinch , energy density , mechanics , radiation , computer simulation , atomic physics , computational physics , nuclear physics , quantum mechanics , theoretical physics
A twodimensional,radiation magnetohydrodynamics model is applied to the simu lation of Zpinch plasma sausage instability.Different implosion mechanisms in the cases of the existence and the nonexistence of instability are analyzed,an d the effects of various initial density perturbation levels on the x-ray power and energy are investigated.Numerical results show that x-ray energy output is not susceptive to sausage instabilities in a certain extent but x-ray power ve rsus time is evidently dependent on the instabilities.In addition,this paper als o studies the effects of numerical treatment of extreme low density in Zpinch simulations on numerical results.