项目名称: 强激光场原子分子动力学研究
项目编号: No.11274050
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: 陈京
作者单位: 北京应用物理与计算数学研究所
项目金额: 74万元
中文摘要: 强激光场中原子分子动力学的研究是物理学当前的一个前沿热点领域,对人们理解极端条件下的物质行为有着十分重要的科学意义。我们将与实验密切合作,对原子分子在强激光场中的电离和高次谐波产生等过程进行深入系统的研究。我们将对隧穿区域光电子能谱上的低能结构进行进一步的研究,探讨其量子方面的形成机制;研究碱土金属等复杂原子在强激光场中的单电离和双电离等过程,探索电子间的强关联效应对电离过程的影响;研究原子分子在中红外强激光场中深隧穿区域的电离过程,研究其对波长的依赖关系;研究离子库仑场、电子关联效应和分子结构对高次谐波过程的影响;探索利用双色场、椭圆偏振场等方法对谐波产生过程进行调控,以研究谐波产生过程中的电子波包动力学;利用原子分子与高次谐波产生的EUV相干光或其与红外、中红外激光相结合的光场的相互作用对强外场条件下的EUV光对原子分子的激发、电离和电子波包动力学的进一步操控等问题进行研究。
中文关键词: 阈上电离;非次序双电离;高次谐波产生;电子关联;
英文摘要: Study on dynamics of atoms/molecules in ultrashort and ultrastrong laser field is the frontier of current physical research and has important significance on our understanding of behavior of matters under extreme conditions. We will perform systematic study on ionization and high harmonic generation processes of atom/molecule in ultrashort and ultrastrong laser field tightly collaborated with experiments. We will further investigate the low energy structure in the photoelectron energy spectrum in tunneling ionization regime, especially its quantum mechanical mechanism; we will study single and double ionization processes of complex atoms, e.g., alkline-earth atoms, in intense laser field to investigate the effect of strong correlation between electrons on the ionization process; we will study double ionization process of atom/molecule in mid-infrared intense laser field to investigate wavelength dependence of the double ionization process, study problems like classical characteristics of physical process in the deep tunneling regime and classic-quantum correspondence etc.; we will study effects of ionic Coulomb potential, electron-electron correlation and molecular structure on high harmonic generation process; we will control the harmonic generation process using two-color field and elliptically polarized field
英文关键词: above-threshold ionization;nonsequential double ionization;high harmonic generation;electron correlation;