项目名称: 基于扩散模型研究重核和超重核熔合与裂变
项目编号: No.10875013
项目类型: 面上项目
立项/批准年度: 2009
项目学科: 金属学与金属工艺
项目作者: 包景东
作者单位: 北京师范大学
项目金额: 36万元
中文摘要: 用蒙特卡罗方法模拟多维朗之万方程,进一步发展超重核熔合扩散模型。研究分析超重核的准裂变机制和核颈部涨落效应,系统地计算了合成Z=117,119和120新超重核的最佳反应截面,为实验预言弹靶组合。 本项目取得了较好的成果,在Phys.Rev.C发表4篇文章(含一篇快速通讯),在Phys.Rev.E上发表2篇文章,在中国科学G发表1篇文章,共计16篇SCI论文;高等教育出版社出版《热力学与统计物理简明教程》1部,获北京市高等教育教学成果二等奖1项。
中文关键词: 超重核;熔合;裂变;扩散模型;多维Langevin方程
英文摘要: Based on Monte Carlo simulation of multidimansional Langevin eqnations, we develop deeply the diffusion model of superheavy nuclei. The dynamical effects of quasi-fission and neck fluctuation of fusioning system are studied and discussed. The evaporation residue sections for the synthesis of supeheavy elements 117, 119 and 120 via hot fusion reactions are calculated. This subject has performed some nice results. A book of "A Concise Course in Thermodynamics and Statistical Physics" has been published by Higher Education Press; we have also published 16 SCI papers and got the second prize of teaching production of Beijing city.
英文关键词: superheavy nuclei; fusion; fission; diffusion model; multidimensional Langevin equation