非均匀载流柱形等离子体中的磁流体力学波  

MAGNETOHYDRODYNAMICS WAVES IN A NONHOMEG-ENEOUS CURRENT-CARRYING CYLINDRICAL PLASMA

作　　者：杨维纮[1] 胡希伟[1] 

机构地区：[1]中国科学技术大学近代物理系,合肥230026

出　　处：《物理学报》1996年第4期595-600,共6页Acta Physica Sinica

基　　金：国家自然科学基金资助的课题.

摘　　要：对非均匀载流柱形等离子体数值求解了计及有限离子频率效应和有限压强效应的磁流体力学方程组.证实了在有天线激励情况下,理想等离子体的阿耳文波共振层并不奇异,且阿耳文波可以越过共振层并得到等离子体的强烈响应.还研究了天线和等离子体的耦合情况,给出了m=1时的本征波谱曲线及典型波在等离子体中的传播,结果表明对各种频段的外界输入的磁流体波,都存在着到达共振层前被阻尼而在通过共振层后被放大的共同特征.Considering the effects of both the finite ion-cyclotron frequency and the finite presure, We solved numerically the magnetohydrodynamics (MHD) equations describing a nonhomegeneous current-carrying cylindrical plasma. It is found that the resonant layer of the shear Alfven wave in an ideal plasma impelled by rf wave of antenna is not a singular layer and that Alfven wave can go across the resonant layer. The couple of an antenna with plasma is researched carefully and the results is given by some figures.

关 键 词：柱形 等离子体 磁流体力学波 非均匀载流 

分 类 号：O361.6[理学—流体力学]