学术报告:核物理领域的热点问题之核结构与同位旋研究
  • 来源:深圳大学物理科学与技术学院
  • 发布者:physics
  • 发布时间:2016-09-08 10:11:49
  • 浏览次数:186
  • 题目:Collective excitation in transitional nuclei studied by means of gamma-ray spectroscopy and lifetime measurements

    主讲:李红洁,清华大学

    时间:2015113日下午1530

    地点:实验楼S109

    承办物理科学与技术学院

    报告内容:

    This talk will be about the experimental studies of excited states in the 162W and 166Re nuclei. These nuclei are situated in the very neutron-deficient 160−170 mass region, requiring special techniques for identifying their excited-state structures. The yrast band of 162W was first built in our work. In addition, the experimental setup enabled a precise determination of the half-life of the alpha-decaying ground state of 162W. Two rotational-like bands were identified in 166Re for the first time and the lifetimes of the lowest three excited states in band (1) were measured using the recoil distance Doppler shift method.

     

    题目:裂变反应中的同位旋效应

    主讲:王任生,清华大学

    时间:2015113日下午1615

    地点:实验楼S109

    承办物理科学与技术学院

    报告内容:

    非对称核物质状态方程的研究是当今核物理领域的热点问题之一,对人们了解中子星演化,丰中子核的结构,融合反应截面等问题至关重要。现阶段已对饱和密度点附近的对称能有了一定的约束,但仍有较大的误差。本次报告将介绍在35MeV/u 40Ar+197Au的裂变反应中,如何通过轻带电粒子的发射研究裂变反应中的同位旋效应,并基于此提出了一个约束低密区对称能的新探针。为了进一步的利用该探针对低密区对称能做出定量约束,我们研究组近期又基于兰州近代物理所RIBLL1终端进行了30MeV/u 40Ar+197Au裂变实验,本次报告同时会介绍该实验的探测器布局以及数据处理的初步情况。