^19F＋^27Al耗散反应中双核系统的转动与衰变

Rotation and Decay of the Dinuclear System Formed in Dissipative Reaction of 19F+27Al

测量了19F+27Al耗散反应产物B,C,N,O,F和Ne的激发函数,入射束流的能量从110.25MeV 到118.75MeV,能量步长为250keV.用能量自关联函数方法从激发函数中提取了各反应产物的平均衰变宽度,利用同时考虑反应中所形成的中间双核系统的转动特性和衰变特性而发展了的Ericson核反应统计理论,讨论了19F+27Al耗散反应中双核系统随时间的演化过程.

Excitation functions of the reaction products B, C, N, O, F and Ne in the dissipative heavy ion collision of ^19F＋^27Al have been measured at incident energies from 110.25MeV to 118.75MeV in step of 250keV. The energy coherent widths F of the products are extracted by using the energy autocorrelation functions. Taking into account the properties of both the rotation and decay in an intermediate dinuclear system formed in the reaction, the Ericson statistical theory in nuclear reaction has been developed and the evolution process of the dinuclear system is discussed.