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首页> 外文期刊>Physical Review, A. Atomic, molecular, and optical physics >Multiphoton single ionization of two-electron systems in intense laser fields
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Multiphoton single ionization of two-electron systems in intense laser fields

机译：强激光场中双电子系统的多光子单电离

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摘要

Multiphoton single-ionization of a two-electron system (He and He-like ions) in intense circularly polarizedlaser field is reported in a relativistic field theoretic method. Coulomb-correction factor is introduced toestimate the effect of the Coulomb field of the residual ion on the rate. Antisymmetric wave function isconsidered both in the initial and in the final state. The spin-specific currents are calculated. Angular asym-metry in current generation is noted with the change in the spin direction of the ionized electron. Coulomb-corrected relativistic-result for total rate is compared with the Coulomb-corrected nonrelativistic KFR rate. Atthe high-intensity regime nonrelativistic rate overestimates the relativistic rate. Formation of orthopositroniumand parapositronium from positronium negative ion by multiphoton ionization is discussed.
机译：相对论场理论方法报道了在强圆偏振激光场中双电子系统（He和He样离子）的多光子单电离。引入库仑校正因子以估计残留离子的库仑场对速率的影响。在初始状态和最终状态都考虑了反对称波函数。计算自旋电流。随着离子化电子的自旋方向的变化，注意到电流产生中的角度不对称性。将库仑校正的相对论结果的总比率与库仑校正的非相对论KFR比率进行比较。在高强度体制下，非相对论率高估了相对论率。讨论了由正电子负离子通过多光子电离形成正正电子和对正电子。

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