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arXiv 0802.2878physics.atom-phnucl-th
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库仑场和laser场中的Delbrück散射

Delbrück scattering in combined Coulomb and laser fields

A. Di Piazza, A. I. Milstein

摘要:

本文研究了激光场中库仑场中的Delbrück散射。在玻恩近似下计算了库仑场的振幅,并精确地计算了具有任意强度、光谱含量和偏振的激光场的参数。本文详细研究了单色圆偏振激光场的高能初始光子能量情况。结果表明,该过程的角分布与纯库仑场中的Delbrück散射有很大不同。讨论中的截面的值在实际激光参数下可能超过后者,这基本上简化了对该现象的实验观察的可能性。在激光场的量子强度参数$χ$中的高阶项的影响被发现在相对小的$χ$处已经是非常重要的。

英文摘要:

We study Delbrück scattering in a Coulomb field in the presence of a laser field. The amplitudes are calculated in the Born approximation with respect to the Coulomb field and exactly in the parameters of the laser field having arbitrary strength, spectral content and polarization. The case of high energy initial photon energy is investigated in detail for a monochromatic circularly polarized laser field. It is shown that the angular distribution of the process substantially differs from that for Delbrück scattering in a pure Coulomb field. The value of the cross section under discussion may exceed the latter at realistic laser parameters that essentially simplify the possibility of the experimental observation of the phenomenon. The effect of high order terms in the quantum intensity parameter $χ$ of the laser field is found to be very important already at relatively small $χ$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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