项目名称: 弱相对论强场原子物理的CWDVR谱方法应用研究
项目编号: No.11274001
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 数理科学和化学
项目作者: 曾思良
作者单位: 北京应用物理与计算数学研究所
项目金额: 60万元
中文摘要: 本项目拟将库仑波函数分立变量表象(CWDVR)方法和Gauss-Legendre-Fourier网格有机地结合起来,发展先进的求解三维含时Pauli方程的数值方法。在此基础上,定量阐明激光场与高离化态离子相互作用中的相对论修正效应,探索超高次谐波发射的新机制。通过大规模数值模拟研究,总结归纳高离化态离子在超强激光场中的特征电离信号与激光参数间的依赖关系,探索间接准确标定超强激光场功率密度的新方案。相关的研究工作,一方面可以增进人们对强场原子物理的认识,一方面可以为解决强激光功率密度的准确标定这一长期困扰人们的难题提供重要的理论支持。
中文关键词: CWDVR谱方法;相对论修正;高次谐波;功率密度标定;
英文摘要: This project aims to develop an advanced numerical method for solving the three-dimensional time-dependent Pauli equation, by adopting a combined theoretical method of the coulomb wave function discrete variable representation (CWDVR) and the Gauss-Legendre-Fourier grid. Thereafter, we also want to quantitatively investigate the relativistic correction effects of the interaction between the laser field and the highly charged ion, and to explore a new mechanism of super-high-order harmonic generation. Through the extensive numerical simulation, we can derive the relation between the characteristic ionized signal and the laser parameters, then to constitute a new proposal to indirectly calibrate the power density of the intense laser field. Our work will not only enhance the understanding of the strong field atomic physics, but also will provide an important theoretical basis for accurately calibrating the power density of the strong laser.
英文关键词: CWDVR pseudospectral method;relativistic correction;high order harmonic generation;Calibration of power density;