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Avalanche runaway growth rate from a momentum-space orbit analysis

机译:根据动量空间轨道分析得出的雪崩失控增长率

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摘要

The growth of avalanche runaway electrons, a potentially serious issue for disruptions in high-current tokamaks, was recently studied by Monte Carlo and numerical solutions of the relativistic Fokker-Planck equation. Here a new analytical formulation based on the analysis of the particle trajectories of the knocked out secondary electrons offers insight and yields an analytical expression for the growth rate over the entire parameter range of interest. The growth rates are compared with the numerical simulations and analytical solutions of the Fokker-Planck equation in various limits [M. N. Rosenbluth and S. V. Putvinski, Nucl. Fusion 37, 1355 (1997)], and are found to be in good agreement. (C) 1999 American Institute of Physics. [S1070-664X(99)03306-6]. [References: 18]
机译:蒙特卡罗(Monte Carlo)和相对论性福克-普朗克方程的数值解最近研究了雪崩失控电子的生长,这是大电流托卡马克中断的潜在潜在严重问题。在此,基于对被剔除的二次电子的粒子轨迹进行分析的新分析公式提供了见识,并针对整个感兴趣的参数范围内的增长率提供了分析表达式。将增长率与在不同范围内的Fokker-Planck方程的数值模拟和解析解进行比较[M. N. Rosenbluth和S. V. Putvinski,Nucl。 [Fusion 37,1355(1997)],并被发现有很好的一致性。 (C)1999美国物理研究所。 [S1070-664X(99)03306-6]。 [参考:18]

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