One‐Dimensional Plasma Model
One‐Dimensional Plasma Model
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DOI：
10.1063/1.1706638
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发表时间：
1962-04
影响因子：
4.6
通讯作者：
J. Dawson
中科院分区：
文献类型：
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作者：
J. Dawson
通过在高速计算机上跟踪片层运动，研究了由嵌入均匀固定中和背景中的大量相同电荷片组成的一维等离子体模型。对系统的热化特性和遍历行为进行了检查，发现与在相同体积的可用相空间中找到该系统的可能性相同的假设一致。获得了热平衡等离子体的速度分布、德拜屏蔽、快慢薄片上的阻力、速度空间中的扩散、傅里叶模式的朗道阻尼、傅里叶模式的幅度分布函数以及薄片感受到的电场分布，并与理论预测值进行了比较。在每种情况下，除了慢速片材上的阻力之外，数值结果在结果的统计准确性范围内与理论一致。慢速板材上的阻力数值结果大约低 2 倍......
A one‐dimensional plasma model consisting of a large number of identical charge sheets embedded in a uniform fixed neutralizing background is investigated by following the sheet motions on a high‐speed computer. The thermalizing properties and ergodic behavior of the system are examined and found to be in agreement with the assumption that one is equally likely to find the system in equal volumes of the available phase space. The velocity distribution, Debye shielding, drag on fast and slow sheets, diffusion in velocity space, the Landau damping of the Fourier modes, the amplitude distribution function for the Fourier modes, and the distribution of electric fields felt by the sheets were obtained for the plasma in thermal equilibrium and compared with theoretically predicted values. In every case, except one, the drag on a slow sheet, the numerical results agreed with theory to within the statistical accuracy of the results. The numerical results for the drag on a slow sheet were about a factor of 2 lower...