应欧洲杯下单平台的邀请，日本东北大学Ying Chen副教授将于周三上午来我院作学术报告。欢迎各位老师和同学积极参加。

报告题目：First-principles modeling of defects behavior in ceramic fuel

时间：9月8日（周三）上午10：00

地点：主316会议室

Abstract

Uranium dioxide is a widely used ceramic fuel material in nuclear reactor. It has been found that a characteristic defective structure is emerged after a complex processes under the high burn-up. This so called “Rim structure” induces swelling of the lattice then influences the burning effect and life of the fuel. To investigate the microscopic mechanism of the defective structure behavior in the ceramics fuel, computational study from first principles approach to molecular dynamics has been performed. Calculations on defect clusters clarified the ambiguousness remaining for long in the structure of nonstoichiometric UO2+x, proposed a new model of oxygen cluster stability.

Biography

Ying Chen specializes in condensed matter physics; her main research field is the computational materials science. Dr Chen received her Ph.D. from Department of Quantum Engineering and Systems Science, The University of Tokyo in 1996; her Masters from Department of Physics, University of Science and Technology Beijing, Bachelor from Department of Physics, Beijing Normal University. After working in Japan Science and Technology Agency (JST) for six years, she jointed the faculty in School of Engineering, the University of Tokyo as an Associate Professor in 2002, then moved to Department of Nanomechanics, Tohoku University in 2009. She have been working in theoretical research of materials properties and materials design, such as first principles calculations of phase stability, phase equilibria and phase transition of alloys, first principles modeling of irradiation effect of nuclear materials, and materials design with integrating materials modeling and data-mining, have been in charge in Computation Group of Japan national project of New Crossover in Nuclear Research. 75 research papers in scientific journals, 38 invited talks in international conferences.