标题： 电子-正电子对在高强度激光与高Z靶相互作用中的产生估计 显示英文标题

标题： Estimations of electron-positron pair production at high-intensity laser interaction with high-Z targets

摘要： 电子-正电子对在$10^{18}$-$10^{20}$~W/cm$^2$激光辐射与高Z靶的相互作用中产生的现象被研究。 计算结果考虑了由于电子和轫致辐射光子引起的对产生过程的贡献，展示了从靶材中产生的对以及正电子产率。 使用PRIZMA代码的蒙特卡罗模拟验证了所得的估计值。 估计由皮秒激光（功率为$10^2$-$10^3$~TW）照射的高Z靶可能的正电子产率为$10^9$-$10^{11}$。 显示英文摘要

摘要： Electron-positron pairs' generation occuring in the interaction of $10^{18}$-$10^{20}$~W/cm$^2$ laser radiation with high-Z targets are examined. Computational results are presented for the pair production and the positron yield from the target with allowance for the contribution of pair production processes due to electrons and bremsstrahlung photons. Monte-Carlo simulations using the PRIZMA code confirm the estimates obtained. The possible positron yield from high-Z targets irradiated by picosecond lasers of power $10^2$-$10^3$~TW is estimated to be $10^9$-$10^{11}$.