高功率光学激光场中真空对产生引起的可观测效应
Observable effects caused by vacuum pair creation in the field of high-power optical lasers
摘要：
我们考虑了在两束强度为10^20 - 10^22 W/cm ^2的反向传播激光束的聚焦处产生真空e+e对的实验证据的可能性。我们的方法是基于无碰撞动力学方程的分布函数的e+e-对与源项的粒子生产。作为真空对产生的一种可能的实验信号，我们考虑用干涉滤光片观察高频探测激光束被产生的e ~+e ~-等离子体折射。研究了自洽电场中激光频率高次谐波的产生。
英文摘要：
We consider the possibility of an experimental proof of vacuum e+e- pair creation in the focus of two counter-propagating optical laser beams with an intensity of the order of 10^20 - 10^22 W/cm^2. Our approach is based on the collisionless kinetic equation for the distribution function of the e+e- pairs with the source term for particle production. As a possible experimental signal of vacuum pair production we consider the refraction of a high-frequency probe laser beam by the produced e+e- plasma to be observed by an interference filter. The generation of higher harmonics of the laser frequency in the self-consistent electric field is also investigated.
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