6MeV/u的^(19)F+^(27)Al反应碎片的发射机制  

Fragment Emission in Reaction of ^(19)F+^(27)Al at～6 MeV/u

作　　者：白真[1,2] 韩建龙[1] 陈志强[1] 王建松[1] 王琦[1] 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000 [2]中国科学院大学,北京100049

出　　处：《原子核物理评论》2013年第2期122-127,共6页Nuclear Physics Review

基　　金：国家自然科学基金青年基金资助项目(10905076)~~

摘　　要：重离子核反应中的碎片发射机制是近年来人们十分关注的研究课题。利用E-E探测器,测量了～6 MeV/u的19F+27Al反应中核电荷数Z=2～13的出射碎片。对产物的能谱、角分布、激发函数及能量自关联函数的分析表明,出射产物主要来自弹靶核深部非弹性碰撞所形成的转动的双核系统。In recent years, extensive studies have been made to understand the fragment emission mechanisms in low energy light heavy-ion reactions. These fragments are found to be emitted from quasielastic/projectile breakup, deep-inelastic and fusion-fission processes. Fragments of Z = 2 -13 induced by the collision of 19F＋27A1 have been measured by AE-E telescope. The analysis of the energy spectra, angular distributions, excitation functions and energy auto-correlation functions of these fragments shows that the emission of fragments is coming from a rotational dinuclear system formed in the dissipative collision of the projectile and target nuclei.

关 键 词：核反应 轻系统 碎片发射 激发函数 

分 类 号：O571.4[理学—粒子物理与原子核物理]