极低能核库仑fission的多分支事件
Multi-pronged events from Coulomb fission of nuclei at very low energies
摘要：
用$^{252}$ Cf裂变源在聚对苯二甲酸乙二酯（$_{10}$ H $_8$ O $_4$）$_n$固体核径迹探测器上记录了多分叉径迹。在化学腐蚀后，在光学显微镜下观察到两叉到六叉的径迹以及单径迹。我们进行了系统的研究，以了解叉的起源。径迹探测器涂有金属（Cu、Ag和Pb）并暴露于$^{252}$ Cf源。在化学蚀刻后，在每个板中观察到两叉至四叉的轨迹。我们相信，在1 MeV/A量级的极低能量下，库仑裂变是这种多管齐下的轨道起源的唯一合理解释。
英文摘要：
Multi-pronged tracks have been recorded in the polyethylene terephthalate (C$_{10}$H$_8$O$_4$)$_n$ solid state nuclear track detector by exposure to a $^{252}$Cf fission source. After chemical etching, two-prong to six-pronged tracks along with single tracks have been observed under the optical microscope. We carried out a systematic study to understand the origin of the prongs. The track detectors were coated with metals (Cu, Ag and Pb) and were exposed to $^{252}$Cf source. After chemical etching two-prong to four pronged tracks were observed in each plate. We believe that at this very low energy of the order of 1 MeV/A, Coulomb fission is the only plausible explanation for the origin of such multi-pronged tracks.
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