Attosecond electron dynamics: A multiresolution approach
Attosecond electron dynamics: A multiresolution approach
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阿秒电子动力学：多分辨率方法
DOI：
10.1103/physreva.85.033403
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发表时间：
2012
影响因子：
2.9
通讯作者：
P. Krstic
中科院分区：
文献类型：
--
作者：
Nicholas Vence;R. Harrison;P. Krstic
我们建立了依赖时间的薛定谔方程的数值解，采用了一种自适应的、不连续的谱元素基，它自动调整到所要求的精度。显式时间演化由带限、梯度校正的辛传播子完成，并使用分离的算子表示在多维上进行有效的计算。给出了在驱动频率为36 eV、光强为36 eV的两周期阿秒激光脉冲作用下，H(1)、He(1)、Li(2)以及H(1)、He(1)和Li(2)在三维和四维空间的精确束缚跃迁几率和连续跃迁几率以及光电子能谱的计算方法。
We establish a numerical solution to the time-dependent Schrödinger equation employing an adaptive, discontinuous spectral element basis that automatically adjusts to the requested precision. The explicit time evolution is accomplished by a band-limited, gradient-corrected, symplectic propagator and uses separated representations of operators for efficient computation in multiple dimensions. We illustrate the method calculating accurate bound and continuum transition probabilities along with the photoelectron spectra for H(1), He(1), and Li(2) in three dimensions and Hin three and four dimensions under a two-cycle attosecond laser pulse with driving frequency of 36 eV and an intensity of.