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A Parallel Code for Simulating the Ionization of Hydrogen with Short Intense Laser Pulses

机译:用短强度激光脉冲模拟氢电离的并行代码

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摘要

We report our computational studies concerning the response of a hydrogen atom initially in its ground state subject to short intense laser pulses with linear polarization. The time-dependent Schrodinger equation in a space-translated Kramers-Henneberger frame of reference is integrated numerically on a parallel computer with virtual shared memory (KSR1-32). The singularities of the system's Hamiltonian in cylindrical coordinates are eliminated by expanding the wave function in a Bessel-Fourier series. In order to reduce storage requirements a discrete variable representation of the grid points is employed, which diagonalizes the potential matrix. The implemented unitary split operator algorithm guarantees an exact and efficient propagation in time. After the atom's interaction with the laser pulse the electronic energy distribution as well as the spectrum of the emitted photons are calculated from the final wave function.
机译:我们报告了有关氢原子最初处于基态时受到线性偏振短强激光脉冲的响应的计算研究。空间转换的Kramers-Henneberger参考系中随时间变化的薛定inger方程在数值上集成在带有虚拟共享内存(KSR1-32)的并行计算机上。通过扩展Bessel-Fourier级数中的波动函数,可以消除系统在圆柱坐标系中的哈密顿量的奇异性。为了减少存储需求,采用了网格点的离散变量表示,其使对角矩阵成对角线。实施的单一拆分算子算法保证了时间的精确和有效传播。在原子与激光脉冲相互作用之后,可以根据最终波函数计算出电子能量分布以及所发射光子的光谱。

著录项

  • 来源
    《》|1995年|312-317|共6页
  • 会议地点 Milan(IT);Milan(IT)
  • 作者单位

    Max-Planck-Institut fuer Stroemungsforschung, Bunsenstr. 10, 37073 Gottingen, Germany;

    Gesellschaft fuer wissenschaftliche Datenverarbeitung Goettingen, Am Fassberg, 37077 Goettingen, Germany;

    Max-Planck-Institut fuer Stroemungsforschung, Bunsenstr. 10, 37073 Gottingen, Germany;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TQ4;
  • 关键词

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