报告题目：Systematic evaluations of astrophysical reaction rates: achieved results, present status, and future perspective

　　报告人：徐 毅 IFIN-HH

　　时间：2018年1月31日10:00

　　地点：近代物理所工艺楼六楼会议室

　　摘要：

　　The astrophysical reaction rate is very important to determine the element abundance and energy release in star evolution, which in involved in various nucleosynthesis processes. In this presentation, the evaluations of reaction rates are introduced in respect to the nuclear mass and energy level of the reaction system. For the nuclear targets with A≤40, the reaction rates are evaluated one by one, by collecting the experimental data and necessary theoretical results; computing the reaction rates from reaction models, and fitting the calculations to the experimental data. For the nuclear targets with A>40, the reaction rates are evaluated in a systematic way. In particular, complete descriptions of all the reaction channels including all types of direct, pre-equilibrium, and compound mechanisms are taken into account, and the nuclear ingredients required for calculations are extracted from the microscopic nuclear-structure properties and experimental information if available. It is expected that the reasonability and reliability of the reaction rates could be guaranteed by these features of evaluations. Finally, comprehensive database for the evaluated reaction rates involved in various nucleosynthesis is promising.