激光等离子体相互作用中量子电动力学效应对激光能量吸收的影响

The effect of quantum electrodynamics on laser energy absorption in the interaction of laser and plasma

为了研究强激光与等离子体相互作用中的量子电动力学(QED)效应对激光能量吸收的影响,用理论方法对强度为I>10^22wcm^-2、反方向传播的两束圆极化强激光与等离子体固体靶相互作用过程进行研究。探讨经典和QED情况下的辐射阻尼效应对激光能量吸收的影响。结果表明,在QED情况下,在相互作用过程中能够产生高能电子和高能辐射。这些高能电子集体振荡过程中的辐射阻尼导致激光能量的强吸收。QED情况比经典情况具有更好的实际应用价值。

To study the effect of quantum electrodynamics on laser energy absorption in laser plasma interaction,this paper mainly study two counter propagating lasers interacting with plasma at intensity exceeding theoretically.The influence of radiation damping effect on laser energy absorption under classical and QED conditions are discussed.The results show that in the case of QED,the high energy electrons and the high energy radiation generated in interaction process.The radiation damping during the collective quiver of energetic electrons results the strong energy absorption.The QED model of the energy absorption has better practical application value than classic case.