Abstract
Coincidence \ensuremath{\gamma}-ray data from the spontaneous fission of $^{242}\mathrm{Pu}$ were collected at the Lawrence Berkeley Laboratory high purity Ge (HPGe) array, GAMMASPHERE. Data from several cold-fission (0 neutron emission) isotopic pairs were observed and are presented. An interesting trend in the fractional population of cold-fission events was observed and is discussed. Relative yields of Zr-Xe, Sr-Ba, and Mo-Te pairs were measured. The Zr-Xe system has the most complete data set. Some speculations on the trend in the number of neutrons emitted as a function of the mass of the Xe isotope populated are presented. Comparisons between the yields from the spontaneous fission of $^{242}\mathrm{Pu}$ and the yields from thermal-neutron-induced fission of $^{241}\mathrm{Pu}$ are also presented. \textcopyright{} 1996 The American Physical Society.
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