用非弹性碰撞分解费米加速
Breaking down the Fermi acceleration with inelastic collisions
摘要:
研究了具有随机扰动的耗散弹跳球模型的费米加速现象。结果表明,能量耗散(粒子与运动壁的非弹性碰撞)的引入是破坏费米加速过程的充分条件。描述了耗散消失极限下能量从有界增长到无界增长的相变。
英文摘要:
The phenomenon of Fermi acceleration is addressed for a dissipative bouncing ball model with external stochastic perturbation. It is shown that the introduction of energy dissipation (inelastic collisions of the particle with the moving wall) is a sufficient condition to break down the process of Fermi acceleration. The phase transition from bounded to unbounded energy growth in the limit of vanishing dissipation is characterized.
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