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测量了 3 0MeV/u40 Ar束流轰击115 In反应靶时出射的中等质量碎片(IMF)的能谱 .通过比较在不同出射角度发射的同一种IMF的能谱 ,得到了IMF的发射机制随出射角的演化关系 .在假定运动源速度和出射离子库仑位垒不随出射角变化的条件下 ,通过改变发射源的强度和核温度参量完成了对实验测得能谱的运动源拟合 ,并详细讨论了 3个发射源所占份额和源强随出射角的演化关系 .
The energy spectrum of medium-sized fragments (IMFs) exiting at a 115 In reaction target bombarded with 30 MeV / u40 Ar beams was measured. By comparing the energy spectra of the same IMFs emitted at different exit angles, The kinematic source fitting of the measured energy spectrum is accomplished by changing the intensity of the source and the temperature of the core under the assumption that the velocity of the moving source and the exit ion Coulomb barrier do not vary with the exit angle The evolution of the share and source intensity of the three sources with the angle of exit is discussed.