Positron acceleration to ultrarelativistic energies by a shock wave in a magnetized electron–positron–ion plasma
Positron acceleration to ultrarelativistic energies by a shock wave in a magnetized electron–positron–ion plasma
复制标题
磁化电子-正电子-离子等离子体中的冲击波将正电子加速到超相对论能量
DOI：
10.1063/1.1603746
复制
发表时间：
2003
影响因子：
2.2
通讯作者：
Y. Ohsawa
中科院分区：
文献类型：
--
作者：
H. Hasegawa;S. Usami;Y. Ohsawa
通过具有完整粒子动力学的相对论、电磁、粒子模拟来研究斜冲击波中的正电子加速。在模拟中，一些正电子被加速到能量γ∼600，其中γ是洛伦兹因子。与磁场平行的电场对加速起着至关重要的作用；它可以防止一些正电子穿过冲击波。对于一定的激波传播速度和角度，这些正电子会在激波前沿周围停留很长一段时间，大致平行于外部磁场移动，并获得巨大的能量。这些属性与提出的加速模型非常一致。
Positron acceleration in oblique shock waves is studied with relativistic, electromagnetic, particle simulations with full particle dynamics. In the simulations, some positrons have been accelerated to energies γ∼600, where γ is the Lorentz factor. The electric field parallel to the magnetic field plays an essential role in the acceleration; it prevents some positrons from passing through the shock wave. For certain shock propagation velocities and angles, these positrons stay around the shock front for long periods of time, moving roughly parallel to the external magnetic field, and gain great energies. These properties are in good agreement with a proposed acceleration model.