US-Turkey Cooperative Research: Many-Body Dynamics in Open Shell Atoms and Ions

0001501 Pindzola描述：该奖项是对Michael S. Pindzola，物理系，奥本大学在奥本，亚拉巴马，博士托马斯W。Gorczyca，物理系，西密歇根大学，卡拉马祖，密歇根州和Zikry Altun博士，物理系，马尔马拉大学，伊斯坦布尔，土耳其。该项目代表了多体微扰理论（MBPT）在原子光电离研究中的发展和应用的持续努力。 这些研究人员计划开发一种理论方法来处理开壳层原子和离子光电离中的多体动力学，该方法是从头算、可评估且准确的。 通过包括离散状态的相关性，通道间耦合和自旋轨道相互作用，理论结构将制定基于多体微扰理论。 该方法将用于研究（i）过渡金属原子和离子的光电离，（ii）光电离加激发基态和激发态开壳层原子和离子，以及（iii）开壳层原子和离子的光复合。范围：该奖项将允许土耳其和美国科学家之间的合作，他们具有互补的能力和经验。 土耳其调查员和Pindzola博士是原子物理学中多体微扰理论方法应用方面的专家。Gorczyca博士在处理原子光电离和电子散射过程的紧密耦合方法方面知识渊博。 拟议的工作是在计算物理学的能力的前沿：提出的研究系统是复杂的，电子相关性是显着的，相对论效应可能被证明是重要的。这项理论工作将支持在测量复杂系统的光过程，特别是在光子能量高到足以激发核心离子的实验努力。该项目是及时的，因为使用第三代光源的实验人员能够测量一些提出的过程，从而使理论和实验有可能携手并进，相互检查和刺激。 作者建议使用Dirac-Fock计算来检查他们的结果，这不会有其他方法可能出现的问题。 该项目符合INT在共同感兴趣的领域支持合作研究的目标。

0001501PindzolaDescription: This award is for support of a cooperative project by Dr. Michael S. Pindzola, Department of Physics, Auburn University in Auburn, Alabama, Dr. Thomas W. Gorczyca, Department of Physics, Western Michigan University, Kalamazoo, Michigan and Dr. Zikry Altun, Department of Physics at Marmara University, Istanbul, Turkey. This project represents a continuing effort in the development and application of many-body perturbation theory (MBPT) to the study of atomic photoionization. These investigators plan to develop a theoretical methodology to treat many-body dynamics in the photoionization of open- shell atoms and ions, which is ab-initio, assessable and accurate. Through the inclusion of discrete-state correlations, interchannel coupling and spin-orbit interactions, a theoretical construct will be formulated based upon many-body perturbation theory. The methodology will be used to investigate (i) the photoionization of transition metal atoms and ions, (ii) the photoionizaion plus excitation of ground and excited open-shell atoms and ions, and (iii) the photorecombination of open-shell atoms and ions. Scope: This award will allow collaboration between Turkish and US scientists who have complementary capabilities and experience. The Turkish investigator and Dr. Pindzola are experts on the application of many-body perturbation theory methods in atomic physics. Dr. Gorczyca is knowledgeable in the close coupling approach to treating atomic photoionization and electron scattering processes. The proposed work is at the frontier of the capabilities of computational physics: the systems proposed for study are complex, electron correlations are significant, and relativistic effects may prove to be important. This theoretical work will support experimental efforts at measuring photoprocesses for complex systems, particularly at photon energies high enough to excite core ions. The project is timely as experimentalists using third generation light sources are capable of measuring some of the processes proposed, thus allowing theory and experiment the possibility of progressing hand in hand, with each checking and stimulating the other. The authors propose to check their results using a Dirac-Fock calculation, which would not have the problems that may arise in other methods. This project meets INT objectives of supporting collaborative research in areas of mutual interest.