Large Larmor radius (LLR) stability of linear m = 0 and m = 1 modes in a Z-pinch has been studied using the Vlasov-fluid model (Arber et al 1994 Phys. Rev. Lett. 72 2399; 1995 Phys. Rev. Lett. 74 2698). Ions have been modelled fully kinetically through the Vlasov equation, and electrons are treated as a zero temperature, massless fluid. In the present work an improved Vlasov-fluid model is used to investigate the effect of finite electron temperature on m = 0 modes. An electron energy equation is introduced, and results for both adiabatic and isothermal dynamics are presented. It is found that finite electron temperature has a destabilizing effect in general. As a result, the Z-pinch is only weakly stabilized by LLR effects.
大拉莫尔半径（LLR）下Z箍缩中线性m=0和m=1模的稳定性已使用Vlasov-流体模型进行了研究（Arber等人，1994年《物理评论快报》72卷2399页；1995年《物理评论快报》74卷2698页）。离子通过Vlasov方程被完全动力学地建模，而电子则被处理为零温度、无质量的流体。在本工作中，使用改进的Vlasov-流体模型来研究有限电子温度对m=0模的影响。引入了电子能量方程，并给出了绝热和等温动力学两种情形下的结果。研究发现，有限电子温度总体上具有去稳定化效应。因此，Z箍缩仅被LLR效应弱稳定化。