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| 含时量子蒙特卡罗方法研究两电子原子在强激光作用下电子的动力学行为 | |
| 引用本文： | 郭福明,宋阳,陈基根,曾思良,杨玉军.含时量子蒙特卡罗方法研究两电子原子在强激光作用下电子的动力学行为[J].物理学报,2012,61(16):163203-163203. |
| 作者姓名： | 郭福明 宋阳 陈基根 曾思良 杨玉军 |
| 作者单位： | 1. 吉林大学原子与分子物理研究所,长春,130012 2. 台州学院物理与电子工程学院物理与材料工程系,台州,318000 3. 北京应用物理与计算数学研究所计算物理重点实验室,北京,100088 |
| 基金项目： | 国家自然科学基金(批准号: 10904006, 11034003); 中央高校基本科研业务费(批准号: 200903368, 200903372); 浙江省自然科学基金(批准号: Y6110578)和 中国工程物理研究院科学技术发展基金(批准号: 2011B0102026)资助的课题. |
| 摘 要： | 通过改进含时量子蒙特卡罗方法研究了一维模型双电子原 子在强激光作用下的电子动力学过程. 与准确的数值积分求解含时薛定谔方程相比, 计算得到的波包对应的量子系综中粒子的动力学变化和含时波包演化结果定性一致, 且大幅度地提高了计算效率. 根据计算得到的经典粒子系综的动力学演化行为, 分析了原子在强激光作用下的激发、电离、重散射等非线性过程. |
| 关 键 词： | 含时量子蒙特卡罗 强激光 动力学过程 |
| 收稿时间： | 2011-11-30 |
The dynamic process of two-electron atom irradiated by intense laser pulse using time dependent quantum Monte Carlo method |
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| Guo Fu-Ming,Song Yang,Chen Ji-Gen,Zeng Si-Liang,Yang Yu-Jun.The dynamic process of two-electron atom irradiated by intense laser pulse using time dependent quantum Monte Carlo method[J].Acta Physica Sinica,2012,61(16):163203-163203. | |
| Authors: | Guo Fu-Ming Song Yang Chen Ji-Gen Zeng Si-Liang Yang Yu-Jun |
| Institution: | 1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;2. Department of Physics and Materials Engineering, College of Physics and Electronic Engineering, Taizhou University, Taizhou 318000, China;3. Science and Technology Computation Physics Laboratory, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China |
| Abstract: | We investigate the electron dynamic process of a one-dimensional two-electron atom irradiated by strong laser pulse using the improved time-dependent quantum Monte Carlo (TDQMC) scheme. By comparison with the scheme for solving the time-dependent Schrödinger equation by using the accurate numerical integration, the dynamic variation of particle in a quantum ensemble, corresponding to the calculated wave-packet, is consistent with the evolution of time-dependent wavepacket. The computation efficiency of the TDQMC is more largely enhanced than that of the time-dependent integration method. According to the dynamic evolution behaviors of the calculated classical particle ensemble, we analyze the excitation, ionization, recombination of electron and other non-linear processes in a strong laser field. |
| Keywords: | time-dependent quantum Monte Carlo strong laser pulse dynamic process |
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