Long-range angular correlation in dissipative reaction of ^(27)Al+^(27)Al  

Long-rallge angular correlation in dissipative reaction of ^(27)Al+^(27)Al

作　　者：WANGQi CARDELLAG 等 

机构地区：[1]InstituteofModernPhysics,theChineseAcademyofSciences,Lanzhou730000 [2]IstitutoNazionalediFisicaNuchleare,SezionediCatania,Italy

出　　处：《Nuclear Science and Techniques》2000年第3期179-182,共4页核技术（英文）

基　　金：the National Natural Science Foundation of China (No.19775057), the Chinese Academyof Sciences (KJ95T-03) and the Laboratoric

摘　　要：Angular correlation of excitation functions in dissipative heavy ion collision 27Al+27Al has been measured. The incident beam energies ranged from 114MeV to 127MeV in steps of 200keV. The angular analysis region was continuous from 50°to 90°in the center of mass system. An angular coherent width, at least 4n° was obtained. This long-range angular correlation could not be interpreted in the framework of the standard statistical reaction theory with state of equilibrium or near equilibrium, maybe it reveals the formation of a new kind of dissipative structure in the reaction of 27Al+27AI with the state that is far from equilibrium.Angular correlation of excitation functions in dissipative heavy ion collision 27Al+27Al has been measured. The incident beam energies ranged from 114MeV to 127MeV in steps of 200keV. The angular analysis region was continuous from 50°to 90°in the center of mass system. An angular coherent width, at least 4n° was obtained. This long-range angular correlation could not be interpreted in the framework of the standard statistical reaction theory with state of equilibrium or near equilibrium, maybe it reveals the formation of a new kind of dissipative structure in the reaction of 27Al+27AI with the state that is far from equilibrium.

关 键 词：铝27 重离子碰撞 耗散结构 角分布 平衡态 角关联 

分 类 号：O571.6[理学—粒子物理与原子核物理] O571.414[理学—物理]