摘要
研究了等离子体在高频调制场作用下 ,形成自生磁场的机制 .通过求解双时标双流体方程 ,可以得到一组相互耦合的非线性方程。这组方程可以用来描述自生磁场的形成和演化 .数值计算的结果显示 ,在高频调制场作用下 ,可以有自生磁场形成 .计算得到的磁场强度和特征长度 ,与太阳日冕内的观测值符合得很好 .随着时间的增加 ,自生磁场可以产生塌缩现象 ,导致磁场强度在很小的范围内有很大的值 .
Magnetic field generated in plasma with high frequency modulational field has been studied in detail.By solving the two time-scale and two fluid equations,a set of nonlinear equations has been obtained by which the behavior of self-generated magnetic field can be described. Numerical results show that magnetic field self-generated by high frequency modulational field can be produced and with increase of time this magnetic field may collapse,leading to great enhancement of the magnetic field.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第9期1729-1736,共8页
Acta Physica Sinica
基金
江西省自然科学基金 (批准号 :9912 0 0 2 )资助的课题&&
