半周边重离子碰撞中中速源的多重碎裂统计特征
Statistical multifragmentation features of midvelocity source in semiperipheral heavy-ion collisions
摘要：
本文在多重碎裂的框架下讨论了费米能区半周边重离子碰撞中的中速辐射的一些特征。本文报道了在38 AMeV的~（93）Nb +~（93）Nb的二元耗散碰撞中，我们测量到了大量的粒子和碎片的发射，这些粒子和碎片不是来自于通常的热初级碎片的蒸发衰变。我们检查了这些排放的兼容性与多重碎片的源中形成的重叠区域。人们可以相当好地再现数据，假设一个热的和稀的源，可能比初始的核更丰富的n，结果似乎是不敏感的源的大小。
英文摘要：
Some characteristics of midvelocity emissions in semiperipheral heavy-ion collisions at Fermi energies are discussed in the framework of a multifragmenting scenario. We report on binary dissipative collisions of 93Nb + 93Nb at 38AMeV in which we measured an abundant emission of particles and fragments not originated from the usual evaporative decay of hot primary fragments. We checked the compatibility of these emissions with the multifragmentation of a source which forms in the overlap region. One can fairly well reproduce the data assuming a hot and dilute source, possibly more n-rich than the initial nuclei; the results appear to be insensitive to the source size.
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