97MeV^(16)O轰击^(51)V靶出射α粒子的测量与理论分析  

THE MEASUREMENT AND THEORETICAL ANALYSIS OF INCLUSIVE α-PARTICLE EMISSION IN 97MeV ^(16)O+^(51)V REACTION

作　　者：王高昇 王琦[1] 诸永泰[1] 吴国华[1] 王晓明 李松林[1] 胡晓庆[1] 殷旭[1] 徐瑚珊[1] 范国英 冯恩普[1] 宋世战 吴钟立[1] 尹淑芝[1] 张震 

机构地区：[1]中国科学院近代物理研究所 [2]北京师范大学低能物理研究所 [3]兰州大学现代物理系

出　　处：《高能物理与核物理》1990年第3期253-257,共5页High Energy Physics and Nuclear Physics

摘　　要：用不同种类的粒子望远镜测量了97MeV^(16)O+^(51)V反应中出射的α粒子.得到了单举α粒子能谱、角分布、E-θ平面内的d^2θ/dEDΩ截面等高图及速度平面内的d^2θ/PCdEdΩ截面等高图.区分了复合核蒸发的α粒子与直接机制发射的α粒子.用激子模型对预平衡发射的α粒子贡献进行估计,得到的预平衡发射和复合核蒸发分别在α粒子总产额中所占的比份.The inclusive α-particles ade measured with different kinds of telescopes. The energy spectra, angular distribution, the contour plot of d^2σ/dEdΩ in the E-(?) plane and of d^2o/PCdEdΩ, in velocity plane are obtained. The α-particles coming from the evaporation of compound nucleus are distinguished from the ones of direct mechanism. With a calculation of Exciton Model, the contributions from the preequilibrium and equilibrium α-emission are determined respectively. A small contribution comes from other reaction mechanisms.

关 键 词：粒子 V靶 测量 轰击 

分 类 号：O572.353[理学—粒子物理与原子核物理]