项目名称: 丰质子核17Ne的破裂反应研究
项目编号: No.U1332129
项目类型: 联合基金项目
立项/批准年度: 2014
项目学科: 数理科学和化学
项目作者: 卢飞
作者单位: 中国科学院上海应用物理研究所
项目金额: 70万元
中文摘要: 破裂反应是用来研究稳定核集团结构的重要手段。17Ne具有Borromean结构,即可以把它看成由核芯15O和两个价质子这三体组成,并且任何两体组成的子系统都不稳定。所以17Ne在轻靶上的破裂反应主要有如下两种情况。第一种情况是17Ne被移去一个质子后生成不稳定的16F,然后其迅速衰变成15O和另一个质子。通过测量15O和衰变质子可以重建16F的激发能谱,然后通过16F的能级取向就可以推出17Ne价质子所处的轨道信息。第二种情况是17Ne的核芯15O与靶核发生相互作用被敲掉,剩下一个双质子的结构再衰变成两个质子。这种情况常因为实验方法的原因等被忽略。通过测量两个出射质子的角关联,可以得到17Ne基态价质子的关联情况。计划在兰州近代物理所RIBLL放射性束流装置上进行30MeV/u的17Ne打12C靶的破裂反应实验。
中文关键词: 质子晕;破裂反应;时间投影室;蒙特卡洛模拟;
英文摘要: Knockout reactions play an important role in stuy the cluster structure of stable nuclei. 17Ne has a Borromean binding structure, meaning it combined by core 15O and two valence protons. And any two of them can not form a stable structure. So the breakup reaction of 17Ne on a light target has two types. The first type is that one-proton knockout of 17Ne results in an unstable nucleus 16F which will further decay by emission of another proton and core 15O. The excitation energy spectrum of 16F can be reconstructed by the measurement of 15O and decayed proton. The configuration information of 17Ne will be derived from the cccupation of 16F energy level orbits. The second type is that core 15O is knockout by the target results in an di-proton structure which will further decay by emission of two protons. The proton correlation in 17Ne ground state will be derived by measuring the angular correlation of two emitted protons.
英文关键词: proton halo;breakup reaction;TPC;Monte Carlo simulation;