US-Turkey Cooperative Research: Many-Body Effects in the Photoionization Process

描述：该奖项是为了支持亚特兰大佐治亚州立大学物理系的Steven Manson博士和土耳其伊斯坦布尔马尔马拉大学物理系的Altun Zikry博士的合作项目。本项目主要研究利用多体微扰理论（MBPT）研究开壳层原子的光离，重点研究非常困难的过渡金属和稀土元素，以及闭合壳层原子的激发光离。随着新的强大的同步加速器光源的出现，这类系统将更容易在实验室中探索，从而使本研究非常及时。MBPT代码的进一步发展将产生将这种非常强大的方法应用于以前无法管理的工作量的系统的可能性，并充分利用计算机硬件的革命。研究范围：本研究项目将有助于促进对电子和光子与原子相互作用的科学认识。它涉及具有互补专业知识的美国和土耳其科学家。曼森博士擅长从概念简单、设计良好的光电离过程和高能带电粒子的原子电离计算中提取物理见解。Altun博士最熟悉的是早先为多体摄动理论开发的代码的使用。这一提议符合国际情报局在有利于双方的领域加强美中合作的目标。

Description: This award is for support of a cooperative project by Dr. Steven Manson of the Physics Department at Georgia State University in Atlanta and Dr. Altun Zikry of the Physics Department at Marmara University in Istanbul, Turkey. The project focuses on photoionization of open-shell atoms using many-body perturbation theory (MBPT), with particular emphasis on the very difficult transition metals and rare earth elements, and photoionization with excitation of closed-shell atoms. With the advent of the new powerful synchrotron light sources, these kinds of systems will be more readily explored in the laboratory, thus rendering this study quite timely. The further development of the MBPT codes will engender the possibilities of applying this very powerful methodology to systems where the amount of work was previously unmanageable and take full advantage of the revolution in computer hardware. Scope: This research project will be useful in promoting the scientific knowledge on the electron and photon interactions with atoms. It involves US and Turkish scientists with complementary expertise. Dr. Manson is an expert at extracting physical insights from conceptually simple and well-designed calculations of photoionization processes and the ionization of atoms by high-energy, charged particles. Dr. Altun is most familiar with the use of the codes developed earlier for many-body perturbation theory. This proposal meets INT objective of increasing U.S.-foreign collaboration in areas that benefit both sides.