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测量了35MeV／u36Ar+112,124Sn反应中小角关联出射的中等质量碎片(IMF)约化速度关联函数．结果表明36Ar+124Sn反应系统中的约化速度关联函数在小约化速度处的反关联程度比36Ar+112Sn反应系统中的强,表现出明显的入射道依赖性．考察出射粒子对的单核子总动量时,发现这种差异主要来自于高动量粒子对的贡献．用三体弹道理论模型MENEKA分别计算了两个系统的IMF发射时标,在36Ar+112Sn反应系统中约为150fm／c,而在36Ar+124Sn反应系统中,约为120fm／c．同位旋相关的量子分子动力学计算表明,36Ar+124Sn系统中IMF的发射时间谱比36Ar+112Sn系统略有前移,相应地,其中心密度从最高点随时间的下降亦比36Ar+112Sn系统略快．
A medium-quality fragment (IMF) reduction rate correlation function was measured for the small-angle associated emission of the 35MeV / u36Ar + 112,124Sn reaction. The results show that the inverse correlation of the reduced velocity correlation function in the 36Ar + 124Sn reaction system at the reduced velocity is stronger than that in the 36Ar + 112Sn reaction system, and shows obvious entrance-channel dependence. When examining the total mononuclear momentum of the exiting particle pair, it was found that this difference mainly came from the contribution of the high-momentum particle pair. MENEKA, a three-body ballistic theory model, was used to calculate the IMF launch time scales of the two systems, respectively, about 150 fm / c in the 36Ar + 112Sn reaction system and about 120 fm / c in the 36Ar + 124Sn reaction system. The isomerization-related quantum-molecular dynamics calculations show that the emission time spectrum of the IMF in the 36Ar + 124Sn system is slightly forward of that of the 36Ar + 112Sn system. Correspondingly, the decrease of the center density from the highest point over time is also less than that of the 36Ar + 112Sn system Slightly faster.