Analytical estimates of proton acceleration in laser-produced turbulent plasmas
Analytical estimates of proton acceleration in laser-produced turbulent plasmas
复制标题
DOI：
10.1017/s0022377818001149
复制
发表时间：
2018-08
影响因子：
2.5
通讯作者：
K. Beyer;B. Reville;A. Bott;Hye-Sook Park;S. Sarkar;G. Gregori
中科院分区：
文献类型：
--
作者：
K. Beyer;B. Reville;A. Bott;Hye-Sook Park;S. Sarkar;G. Gregori
随着高功率激光器的出现，为在实验室中模拟天体物理过程开辟了新的机会。我们表明，二阶费米加速可以直接调查在国家点火设施，利弗莫尔。这需要测量由激光产生的湍流等离子体内产生的3 MeV质子的动量空间扩散。处理费米加速作为一个偏置的扩散过程中，我们分析表明，一个可测量的初始质子分布的扩大，然后预期退出等离子体的粒子。
With the advent of high power lasers, new opportunities have opened up for simulating astrophysical processes in the laboratory. We show that second-order Fermi acceleration can be directly investigated at the National Ignition Facility, Livermore. This requires measuring the momentum-space diffusion of 3 MeV protons produced within a turbulent plasma generated by a laser. Treating Fermi acceleration as a biased diffusion process, we show analytically that a measurable broadening of the initial proton distribution is then expected for particles exiting the plasma.