Study of Borromean halo nuclei by the neutron wall with simulation  

作　　者：刘龙祥 孙志宇 岳珂 肖国青 陈熙萌 余玉洪 章学恒 王世陶 唐述文 周勇 闫铎 方芳 

机构地区：[1]Institute of Modern Physics, Chinese Academy of Sciences [2]The School of Nuclear Science and Technology Lanzhou University [3]University of Chinese Academy of Sciences

出　　处：《Chinese Physics C》2013年第11期63-66,共4页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(10775159,10925526,11079044)

摘　　要：The model of three-body Borromean halo nuclei breakup was described by using standard phase space distributions and the Monte Carlo simulation method was established to resolve the detection problem of two neutrons produced from breakup reaction on the neutron wall detector. For 6He case, overall resolution ~rEk for the Oaussiaal part of the detector response and the detection efficiency including solid angle acceptance with regard to the excitation energy Ek are obtained by the simulation of two neutrons from 6He breakup into the neutron wall. The effects of the algorithm on the angular and energy correlations of the fragments are briefly discussed.The model of three-body Borromean halo nuclei breakup was described by using standard phase space distributions and the Monte Carlo simulation method was established to resolve the detection problem of two neutrons produced from breakup reaction on the neutron wall detector. For 6He case, overall resolution ~rEk for the Oaussiaal part of the detector response and the detection efficiency including solid angle acceptance with regard to the excitation energy Ek are obtained by the simulation of two neutrons from 6He breakup into the neutron wall. The effects of the algorithm on the angular and energy correlations of the fragments are briefly discussed.

关 键 词：neutron wall GEANT4 fragment correlations Coulonlb breakup 

分 类 号：O571.5[理学—粒子物理与原子核物理] O571.2[理学—物理]