Spin effects in nonlinear Compton scattering in a plane-wave laser pulse

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• 作者：Madalina Boca ; ^{madalina.boca@g.unibuc.ro} ; Victor Dinu ; Viorica Florescu
• 关键词：Nonlinear Compton ; Dirac equation ; Klein&ndash ; Gordon equation ; Spin effects
• 刊名：Nuclear Instruments and Methods in Physics Research Section B ; Beam Interactions with Materials and Atoms
• 出版年：2012
• 期刊代码：42_0168583x
• 类别：ph
• 出版时间：15 May, 2012
• 卷：279
• 期：Complete
• 页码：12-15
• 文件大小：539 K

摘要

We study theoretically the electron angular and energy distribution in the non-linear Compton effect in a finite plane-wave laser pulse. We first present analytical and numerical results for unpolarized electrons (described by a Volkov solution of the Dirac equation), in comparison with those corresponding to a spinless particle (obeying the Klein-Gordon equation). Then, in the spin 1/2 case, we include results for the spin flip probability. The regime in which the spin effects are negligible, i.e. the results for the unpolarized spin 1/2 particle coincide practically with those for the spinless particle, is the same as the regime in which the emitted radiation is well described by classical electrodynamics.