摘要
在静电磁流体方程基础上,提出了柱状放电电弧等离子体磁螺旋不稳定性的一种新的线性分析方法.通过数量级分析得到的简化扰动能量方程研究了外轴向磁场中阻抗粘滞m=1慢模,解析地给出了全部解和不稳定性增长率.并讨论了外加轴向磁场。
A new linear analysis for magnetic helical instabilities of arc discharges in a cylindrical plasma is developed based on a set of electrostatic magnetohydrodynamic equations.The resistive\|viscous m =1 “slow” modes with an external axial magnetic field are studied in the correct electrostatic ordering for the perturbed energy equation.All quantities and the growth rates of helical instabilities are obtained analytically.In addition,the effects of the external axial magnetic field,the arc currents and the rates between arc column radius and tube radius,on the arc helical instabilities are discussed.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第3期502-507,共6页
Acta Physica Sinica
基金
国家自然科学基金!(批准号 :195 772 0 1和 19875 0 0 7)
大连理工大学青年基金资助的课题
