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

0001501Pindzola描述：该奖项是为了表彰由阿拉巴马州奥本大学物理系Michael S.Pindzola博士、密歇根卡拉马祖西密歇根大学物理系Thomas W.Gorczyca博士和土耳其伊斯坦布尔Marmara大学物理系Zikry Altun博士共同发起的合作项目。这个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放壳层原子和离子的光电离中的多体动力学，这是从头算的，可评估的和准确的。通过包含离散态关联、道间耦合和自旋-轨道相互作用，将形成一个基于多体微扰理论的理论结构。这种方法将被用来研究(I)过渡金属原子和离子的光电离，(Ii)基态和激发的开壳原子和离子的光离加激发，以及(Iii)开壳原子和离子的光复合。范围：该奖项将允许拥有互补能力和经验的土耳其和美国科学家之间的合作。这位土耳其研究人员和平佐拉博士都是多体微扰理论方法在原子物理中的应用专家。戈尔奇卡博士对处理原子光电离和电子散射过程的紧密耦合方法了如指掌。这项拟议的工作处于计算物理能力的前沿：拟议研究的系统复杂，电子关联显著，相对论效应可能被证明是重要的。这项理论工作将支持测量复杂系统的光过程的实验工作，特别是在足够高的光子能量激发核心离子的情况下。该项目是及时的，因为使用第三代光源的实验者能够测量所提出的一些过程，从而使理论和实验有可能携手前进，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，这不会出现其他方法可能出现的问题。该项目符合在共同感兴趣的领域支持合作研究的INT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.