^19F＋^27Al耗散反应产物激发函数的长程关联  

Long-range Correlation of Excitation Functions in Dissipative Heavy Ion Collision of ^(19)F+^(27)Al

作　　者：韩建龙[1,2] 王琦[1] 白真[1,2] 董玉川[1,2] 李松林[1] 段利敏[1] 徐瑚珊[1] 徐华根[1,2] 陈若富[1,2] 吴和宇[1] 李志常[3] 路秀琴[3] 赵葵[3] 周平[3] 刘建成[3] 许国基[3] Sergey Yu Kun 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000 [2]中国科学院研究生院,北京100049 [3]中国原子能科学研究院,北京102413 [4]Centro de Ciencias Fisicas,National University of Mexico(UNAM),Cuernavaca,Mexico [5]Center for Nonlinear Physics,RSPhysSE,Australian National University,Canberra ACT0200,Australia

出　　处：《原子核物理评论》2008年第4期322-326,共5页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(10675149);中国科学院方向性项目资助(KJCX3-SYW-No1);国家重点基础研究发展规划资助项目(2007CB81500)~~

摘　　要：在中国原子能科学研究院的HI-13串列静电加速器上完成了19F+27Al耗散反应产物的激发函数测量。束流19F的入射能量从110.25MeV到118.75MeV,步长250keV,测量了实验室系+57°,+31°,-15°和-29°出射的类弹产物B,C,N,O,F和Ne的激发函数。观测到激发函数具有耗散反应的特征涨落结构,分析了激发函数之间的长程角度关联以及强烈的电荷数关联。Excitation functions have been measured for the Ne in the ^27Al（^19F, x）y reactions at incident energies from projectile-like fragments of B, C, N, O, F and 110.25 MeV to 118.75 MeV in 250 keV steps. Strong cross section fluctuations in the excitation functions has been observed. The cross-correlation coefficients of the excitation functions for different atomic number Z and for different scattering angle θcm have been deduced. These coefficients are much larger than the statistical theoretical calculated ones. This indicates that there are strong correlations between different exit channels in the dissipative heavy ion collision of ^27Al（^19F, x）y.

关 键 词：重离子耗散反应 激发函数 关联 

分 类 号：O571.4[理学—粒子物理与原子核物理]