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QPROP: A Schrodinger-solver for intense laser-atom interaction

机译:QPROP:Schrodinger解算器,用于强烈的激光-原子相互作用

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摘要

The QPROP package is presented. QPROP has been developed to study laser-atom interaction in the nonperturbative regime where nonlinear phenomena such as above-threshold ionization, high order harmonic generation, and dynamic stabilization are known to occur. In the nonrelativistic regime and within the single active electron approximation, these phenomena can be studied with QPROP in the most rigorous way by solving the time-dependent Schrodinger equation in three spatial dimensions. Because QPROP is optimized for the study of quantum systems that are spherically symmetric in their initial, unperturbed configuration, all wavefunctions are expanded in spherical harmonics. Time-propagation of the wavefunctions is performed using a split-operator approach. Photoelectron spectra are calculated employing a window-operator technique. Besides the solution of the time-dependent Schrodinger equation in single active electron approximation, QPROP allows to study many-electron systems via the solution of the time-dependent Kohn-Sham equations.
机译:提供了QPROP软件包。 QPROP已开发用于研究非扰动状态下的激光-原子相互作用,在该状态下会发生诸如阈值以上电离,高次谐波生成和动态稳定等非线性现象。在非相对论体系中和在单个有源电子近似中,可以通过在三个空间维度上求解时间相关的薛定inger方程,以最严格的方式用QPROP研究这些现象。由于QPROP已优化用于研究在其初始无扰动配置中呈球形对称的量子系统,因此所有波函数均在球形谐波中扩展。波函数的时间传播是使用分裂算子方法执行的。使用窗口算子技术计算光电子能谱。除了在单个有源电子近似中求解与时间相关的薛定inger方程外,QPROP还允许通过与时间相关的Kohn-Sham方程求解来研究多电子系统。

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