项目名称: 高频深紫外及X射线强激光场与原子和分子相互作用的研究
项目编号: No.61275128
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 无线电电子学、电信技术
项目作者: 王兵兵
作者单位: 中国科学院物理研究所
项目金额: 79万元
中文摘要: 高频深紫外及X射线强自由电子激光与物质相互作用的研究在物理、化学、生物及相关交叉科学领域开创了人类前所未有的新的科学前沿。我们将利用非微扰量子电动力学理论,建立研究高频深紫外及X射线强激光与电子、原子及分子相互作用动力学过程的频域方法。在我们原来处理低频强场物理的经验基础上,具体研究以下几个方面的问题:1、发展高频深紫外及X射线强激光场的频域理论,研究非重碰机制引起的原子和分子单光子双电离、双光子双电离及多光子高剥离过程;2、研究非偶极效应对超硬X射线激光中电子阈上电离及碰撞辐射过程的影响。3、结合原子和分子的电子结构模型,利用频域理论研究复杂原子和分子内壳层电子在高频自由电子激光场中激发、电离及衰变的动力学过程。通过对高频深紫外及X射线强激光场与原子和分子相互作用的研究,拓宽我们的研究领域,达到解释和和预言新的物理现象。
中文关键词: 深紫外及x射线激光;多光子电离;非序列电离;载波相位;频域理论
英文摘要: The advent of high-frequency XUV and X-ray free electron lasers open up hitherto unexplored frontiers in physics, chemistry, biology and interdisciplinary fields. By using the nonperturbation QED theory, we will develop the frequency-domain method to study the interaction between the high-frequency XUV and X-ray free electron laser and electrons, atoms or molecules. Based on the results that we have obtained in the areas of low-frequency strong laser physics, we will study the following topics:1. Develop the frequency-domain theory in high-frequency region, study the single-photon double ionization, two-photon double ionization and multiphoton multi-ionization processes of atoms and mulecules which is not caused by the recollision mechanisms; 2.Study nondipole effect on the electron ionization and radiation in ultrahard X-ray lasers; 3.By using the electron structure model of atoms and molecules, we will study the inner-shell electrons nonlinear dynamics of complex atoms and molecules in strong high frequency laser fields by frequency-domain theory. Based on these studys,we may explore our research area, explain and predict more new physics phenomena.
英文关键词: XUV and X-ray laser;multiphoton ionization;nonsequential ionization;carrier envelope phase;frequency-domain theory