Experimental Study of Two-Alpha Emission from High-Lying Excited States of ^(17,18)Ne  

作　　者：徐新星 林承键 贾会明 杨峰 贾飞 吴振东 张世涛 刘祖华 张焕乔 徐瑚珊 孙志宇 王建松 胡正国 王猛 陈若富 张雪荧 李琛 雷祥国 徐治国 肖国青 

机构地区：[1]China Institute of Atomic Energy [2]Institute of Modern Physics,Chinese Academy of Sciences

出　　处：《Plasma Science and Technology》2012年第5期371-374,共4页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China (Nos.10675169,10735100,10727505,11005156);Major State Basic Research Developing Program of China (No.2007CB815003)

摘　　要：The experiments of two-alpha emission from 17,18^Ne excited levels were performed at the HIRFL-RIBLL facility of the Institute of Modern Physics, Lanzhou. The beams of 17^Ne at the energy of 49.9 MeV/u and lSNe at 51.8 MeV/u bombarded a 197Au target to populate excited states of 17,18^Ne via Coulomb excitation. Complete kinematics measurements were achieved by the detectors of a silicon strip and CsI＋PIN array. The experimental results combined with simple MC simulations show the characteristic of sequential two-alpha emission via 140 excited states for lSNe. The results of two-alpha emission from 17^Ne are preliminary and need further analyses.The experiments of two-alpha emission from 17,18^Ne excited levels were performed at the HIRFL-RIBLL facility of the Institute of Modern Physics, Lanzhou. The beams of 17^Ne at the energy of 49.9 MeV/u and lSNe at 51.8 MeV/u bombarded a 197Au target to populate excited states of 17,18^Ne via Coulomb excitation. Complete kinematics measurements were achieved by the detectors of a silicon strip and CsI＋PIN array. The experimental results combined with simple MC simulations show the characteristic of sequential two-alpha emission via 140 excited states for lSNe. The results of two-alpha emission from 17^Ne are preliminary and need further analyses.

关 键 词：two-alpha emission Coulomb excitation complete kinematics measurements sequential emission 

分 类 号：O571.24[理学—粒子物理与原子核物理]