Multiconfiguration time-dependent Hartree approach for electron-nuclear correlation in strong laser fields
Multiconfiguration time-dependent Hartree approach for electron-nuclear correlation in strong laser fields
复制标题
强激光场中电子-核关联的多配置时间相关 Hartree 方法
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
M. Lein
中科院分区：
文献类型：
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作者：
Chirag Jhala;M. Lein
以氢分子离子模型为例，采用多组态含时Hartree方法研究了强激光场作用下分子动力学中的电子核关联.系统的基态可以用每个自由度只有两个单粒子函数来描述。一个显着更大，但数量适中的配置需要准确地预测激光诱导的碎片概率和高次谐波产生光谱，显示电子和核之间的相关性的自由度的激光场的存在强烈增加。
The multiconfiguration time-dependent Hartree approach is applied to study the electron-nuclear correlation in the dynamics of molecules subject to strong external laser fields, using the example of a model hydrogen molecular ion. The ground state of the system is well described by as few as two single-particle functions per degree of freedom. A significantly larger but moderate number of configurations is required to predict laser-induced fragmentation probabilities and high-order harmonic generation spectra accurately, showing that the correlation between electronic and nuclear degree of freedom is strongly increased by the presence of the laser field.