用laser驱动正电子偶素原子的粒子物理
Particle physics with a laser-driven positronium atom
摘要：
用量子电动力学方法详细计算了激光驱动的电子-正电子碰撞中μ子对的产生。碰撞的粒子来自一个正电子素原子暴露在一个超强的线性偏振激光波中，这使得它具有很高的亮度。在近红外频率范围内，这种高能反应的阈值激光强度为10^22 W/cm ^2。产生的μ子形成一个超相对论的，强准直光束，这是可以解释的经典简单人的模型。我们的研究结果表明，该过程可以观察到在高的正电子素密度与现代激光技术的帮助下。
英文摘要：
A detailed quantum-electrodynamic calculation of muon pair creation in laser-driven electron-positron collisions is presented. The colliding particles stem from a positronium atom exposed to a superintense laser wave of linear polarization, which allows for high luminosity. The threshold laser intensity of this high-energy reaction amounts to a few 10^22 W/cm^2 in the near-infrared frequency range. The muons produced form an ultrarelativistic, strongly collimated beam, which is explicable in terms of a classical simple-man's model. Our results indicate that the process can be observed at high positronium densities with the help of present-day laser technology.
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