^(16)O+^(197)Au准弹性散射实验对硅条探测器定位刻度  

Position calibration of silicon strip detector using quasi-elastic scattering of ^(16)O+^(197)Au

作　　者：闫文奇[1] 胡海龙[1] 张高龙[1] 林承键[2] 张焕乔[2] 张春雷[3] 贾会明[2] 安广朋[3] 吴振东[2] 徐新星[2] 杨峰[2] 刘祖华[2] Kubono S Yamaguchi H Hayakawa S Binh D N Kwon Y K Iwasa N Mazzocco M Commara La M Romoli M Signorini C 

机构地区：[1]北京航空航天大学物理科学与核能工程学院,北京100191 [2]中国原子能科学研究院,北京102413 [3]中国科学院高能物理研究所,北京100049 [4]日本东京大学核物理研究中心 [5]韩国中央大学物理系 [6]日本东北大学物理系 [7]意大利帕多瓦大学物理系和帕多瓦国家核物理研究所,帕多瓦8i35131 [8]意大利那不勒斯大学物理科学系,那不勒斯i80126 [9]意大利那不勒斯国家核物理研究所,那不勒斯i80126

出　　处：《核技术》2013年第8期71-75,共5页Nuclear Techniques

基　　金：国家自然科学基金(11035007;11235002;11175011);北京航空航天大学研究生院教学改革项目;SRTP项目;全国大学生创新创业计划项目资助

摘　　要：本实验利用101 MeV和59 MeV的16O轰击197Au靶对实验中的硅条探测器位置进行了刻度。利用反应产生的准弹散射粒子16O得到在两个能量下此系统的准弹散射角分布,通过对角分布的分析,观察到实验角分布数据合理,符合重离子在重靶上的弹性散射角分布的图像规律,说明实验中用到的硅条探测器系统定位准确,能够用于弹性散射角分布的实验研究。Background： Elastic scattering is induced by weakly unstable nuclei. Generally, a good angular resolution for angular distribution of elastic scattering is needed. The silicon strip detector is often used for this kind of experiment. Purpose： In order to use silicon strip detector to study the elastic scattering of weakly unbound nuclei, it is important to get the information of its position calibration. It is well known that the elastic scattering of stable nuclei has a good angular distribution and many experimental data have been obtained. Methods： So the scattering of stable nuclei can be used to calibrate the position information of silicon strip detector. In this experiment, the positions of silicon strip detectors are calibrated using 101 MeV and 59 MeV ^16O scattering on the ^197Au target. Results： The quasi-elastic peaks can be observed in the silicon strip detectors and the counts of quasi-elastic ^16O can be obtained. The solid angles of the silicon strip detectors are calibrated by using alpha source which has three alpha energy values. The angular distribution of quasi-elastic scattering of ^16O＋^197Au is obtained at these two energy values. Conclusions： The experimental data of angular distribution are reasonable and fit for the principle of angular distribution of elastic scattering. It is concluded that in the experiment these silicon strip detectors can accurately give the position information and can be used for the elastic scattering experiment.

关 键 词：准弹性散射 角分布 硅条探测器 

分 类 号：TL814[核科学技术—核技术及应用]