论文标题
强烈各向异性等离子体中的库仑碰撞I。电子等离子体中的回旋子冷却
Coulomb collisions in strongly anisotropic plasmas I. Cyclotron cooling in electron-ion plasmas
论文作者
论文摘要
考虑了碰撞等离子体的行为,该等离子体在光学上对回旋子辐射进行光学较薄,并且计算了在系统中各个时间尺度上访问的分布函数。特别注意碰撞时间超过辐射排放时间的极限,使电子分布的功能强烈各向异性。对于等离子体物理学而言,尽管血浆远非麦克斯韦,但对于等离子体物理学而言,碰撞运算符仍可以分析计算。计算辐射发射的速率并被发现受碰撞频率乘以仅取决于等离子体参数的因子的碰撞频率。
The behaviour of a collisional plasma which is optically thin to cyclotron radiation is considered, and the distribution functions accessible to it on the various timescales in the system are calculated. Particular attention is paid to the limit in which the collision time exceeds the radiation emission time, making the electron distribution function strongly anisotropic. Unusually for plasma physics, the collision operator can nevertheless be calculated analytically although the plasma is far from Maxwellian. The rate of radiation emission is calculated and found to be governed by the collision frequency multiplied by a factor that only depends logarithmically on plasma parameters.