标题： 单次通过激光极化超相对论正电子 显示英文标题

标题： Single-Pass Lazer Polarization of Ultrarelativistic Positrons

摘要： 提出了一种产生极化相对论正电子的新方法。 一个未极化的正电子束被加速到几GeV后，可以在与强圆偏振激光波的正面碰撞过程中被极化。 经过多次康普顿反散射过程后，初始正电子可能会损失其大部分能量，并因此获得显著的纵向极化。 得到了最终正电子能量和极化度的简单公式，这些公式取决于激光脉冲参数。 对所提出技术与已知技术的效率进行了比较。 展示了新方法的一些优势。 显示英文摘要

摘要： The new method for producing of the polarized relativistic positrons is suggested. A beam of unpolarized positrons accelerated up to a few GeV can be polarized during a head-on collision with an intense circularly polarized lazer wave. After a multiple Compton backscattering process the initial positrons may lose a substantial part of its energy and, as consequence, may acquire the significant longitudinal polarization. The simple formulas for the final positron energy and polarization degree depended on the laser flash parameters have been obtained. The comparison of efficiences for the suggested technique and known ones is carried out. Some advantages of the new method were shown.