摘要
描述了一种用于RIBLL粒子鉴别的阳极分别在X、Y方向分条 ,共用阴极 ,纵向场双叠层气体电离室的结构和工作原理。用 3组分α源对电离室进行能量刻度得到其相对能量分辨对2 4 1Amα源约为 3.4 9%。通过在RIBLL上测量 80MeV/u2 0Ne +58Ni反应次级产物碎片 ,得到ΔE与TOF两维分布图 ,并根据粒子鉴别原理测得A/Z =2时的Z分布和Ne、O、N、C的同位素分布。
For particle identification at the Radioactive Ion Beam Line in Lanzhou (RIBLL), a two-fold ionization chamber which consists of two anodes striped in X and Y direction separately was set up. The relative energy resolution for 241 Am α source is about 3.49% by calibrating the energy of IC using 3-component α source. By measuring the secondary products and projectile fragments in the experiment of 80 MeV/u 20 Ne + 58 Ni reaction at RIBLL, the two-dimensional plot of ΔE versus TOF was measured. According to the principle of particle identification, Z distribution of A/Z =2 and Ne,O, N,C isotope distributions could be obtained.
出处
《核技术》
CAS
CSCD
北大核心
2001年第10期835-841,共7页
Nuclear Techniques
基金
国家自然科学基金 (110 2 19735 0 10
10 0 3196 75 0 5 5 )
