Quantum Quenching of Radiation Losses in Short Laser Pulses
Quantum Quenching of Radiation Losses in Short Laser Pulses
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DOI：
10.1103/physrevlett.118.105004
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发表时间：
2017-03-10
影响因子：
8.6
通讯作者：
Marklund, M.
中科院分区：
文献类型：
--
作者：
Harvey, C. N.;Gonoskov, A.;Marklund, M.
加速的电荷会辐射，因此必须损失能量。这种能量损失对粒子运动的影响，称为辐射反应，在强激光物质相互作用中变得重要，它可以减少碰撞能量，阻碍粒子加速方案，并且似乎是不可避免的。在这里，我们表明，这种共同的信念打破了短激光脉冲，能量损失和辐射反应可以控制和有效地关闭适当的调谐脉冲长度。在经典物理学中，这种发射的“淬灭”是不可能的，但由于量子发射的离散性质，在QED中成为可能。
Accelerated charges radiate, and therefore must lose energy. The impact of this energy loss on particle motion, called radiation reaction, becomes significant in intense-laser matter interactions, where it can reduce collision energies, hinder particle acceleration schemes, and is seemingly unavoidable. Here we show that this common belief breaks down in short laser pulses, and that energy losses and radiation reaction can be controlled and effectively switched off by appropriate tuning of the pulse length. This "quenching" of emission is impossible in classical physics, but becomes possible in QED due to the discrete nature of quantum emissions.