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研究了重离子反应中的集体转动效应及反应特征．给出了反应最大碰撞参数、碰撞中心度、平均集体转动能以及转动角速度等表征反应特征的物理量．对10．6MeV／u84Kr＋27Al→111In裂变反应研究表明，该反应具有高的碰撞中心度，集体转动能约占总激发能的1／3，系统在裂变前转动了约8．8圈．
The collective rotation effect and reaction characteristics in heavy ion reaction were studied. The physical quantities that characterize the reaction characteristics, such as the maximum collision parameter, center of collision, average collective rotational energy and rotational angular velocity, are given. The study on the fission reaction of 10.6MeV / u84Kr + 27Al → 111In shows that the reaction has a high collision center, the collective rotational energy accounts for about 1/3 of the total excitation energy, and the system rotates about 8.8 turns before fission.