Approximation for a Coulomb-Volkov solution in strong fields.
Approximation for a Coulomb-Volkov solution in strong fields.
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DOI：
10.1103/physreva.50.r910
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发表时间：
1994-08
期刊：
影响因子：
--
通讯作者：
Reiss;Krainov
中科院分区：
文献类型：
--
作者：
Reiss;Krainov
一个简单的解析近似的电子波函数同时暴露于一个强大的，圆极化平面波场和原子库仑势。当α 0 1时，该近似有效，其中α 0是自由电子在平面波场中的经典运动半径。这种约束是足够温和的低频率，它使得可能的激光强度的下限的一个主要扩展，其中基于马尔科夫解的近似是有用的。
A simple analytical approximation is found for the wave function of an electron simultaneously exposed to a strong, circularly polarized plane-wave field and an atomic Coulomb potential. The approximation is valid when α 0≫ 1, where α 0 is the classical radius of motion of a free electron in the plane-wave field. This constraint is sufficiently mild at low frequencies that it makes possible a major extension of the lower bound of laser intensities for which Volkov-solution-based approximations are useful.