強レーザー場中の分子内水素分子ダイナミクス

本年度的主要研究内容如下：1）作为上一年度研究的继续，完成了H_2He+分子离子在飞秒强激光脉冲下的光解离动力学研究，并发表了论文。2）利用上一年度开发的高精度变分模拟多原子分子振转/取向动力学的理论框架，研究了H_2He+和H_2O分子的激光诱导取向动力学。3）利用Java和Mathematica编程语言，我们开发了一个跨平台、用户友好的软件，名为“Laser-induced Alignment and Orientation Simulator”（LAOS），可用于在刚性转子近似下模拟分子的光致旋转动力学。据我们所知，目前还没有这样的软件，我们相信它对参与相关研究的实验科学家会很有用。该计划在科学杂志上的出版正在进行中。4）我们开始与来自德国比勒费尔德大学的访问教授Farhad H. M. Faisal，开发新的理论方法来有效地模拟多电子系统中的强场电离，并研究电子相关在光电离过程中的作用。我们的共同工作正在进行中。

The research topics I was engaged in during the fiscal year were the following:1) As a continuation of the research from the previous fiscal year, we finalized our work on the photodissociation dynamics of the H_2He+ molecular ion in an intense femtosecond laser pulse, and published our results in a scientific paper.2) Using the theoretical framework we developed in the last fiscal year, which allows for high accuracy, variational simulations of laser induced rovibrational/alignment dynamics of polyatomic molecules, we investigated the laser-induced alignment dynamics of the H_2He+ and H_2O molecules. We published our research results in a scientific paper.3) Using Java and Mathematica programming languages, we developed a cross-platform, user-friendly software named “Laser-induced Alignment and Orientation Simulator” (LAOS), which can be used to simulate the light-induced rotational dynamics of molecules within the rigid rotor approximation. To the best of our knowledge, such software is not yet available, and we believe it will be useful for experimental scientists involved in related research. Publication of the program in a scientific journal is in preparation.4) We started a collaboration with a visiting professor from Bielefeld University, Germany, Prof. Farhad H. M. Faisal, on developing novel theoretical approaches to efficiently simulate strong field ionization in multielectron systems and to investigate the role of electron correlation in the photoionization processes. Our joint work is in progress.