The behaviour of a collisional plasma that is optically thin to cyclotron radiation is considered, and the distribution functions accessible to it on the various time scales 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.

中文翻译：

---

强各向异性等离子体中的库仑碰撞 I. 电子离子等离子体中的回旋加速器冷却

考虑了对回旋辐射光学薄的碰撞等离子体的行为，并计算了它在系统中不同时间尺度上可访问的分布函数。特别注意碰撞时间超过辐射发射时间的限制，使电子分布函数具有很强的各向异性。与等离子体物理学不同的是，尽管等离子体与麦克斯韦相距甚远，但碰撞算子仍然可以解析计算。计算出辐射发射率，发现它由碰撞频率乘以一个仅与等离子体参数成对数关系的因子决定。