2002•Physics of Atomic NucleiRequires access
Cold and hot binary and ternary fission yields in the spontaneous fission of 252Cf
J. H. Hamilton, A. V. Ramayya, J. K. Hwang, G. M. Ter–Akopian, A. V. Daniel, John Rasmussen, S. C. Wu, R. Donangelo, C. J. Beyer, J. Kormicki, X. Q. Zhang, А. М. Родин, A. Fomichev, G. S. Popeko, J. Kliman, Л. Крупа, M. Jändel, Yu. Ts. Oganessian, G. Chubarian, D. Seweryniak, R. V. F. Janssens, W. C., R. B. Piercey, Walter Greiner, J. D. Cole
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Abstract
The spontaneous fission (SF) of 252 Cf has been studied via γ-γ-γ coincidence and light charged particle— γ-γ coincidence with Gammasphere. The yields of correlated Mo-Ba pairs in binary fission with 0–10 neutron emission have been remeasured with an uncompressed cube. The previous hot fission mode with 8–10 neutron emission seen in the Mo-Ba split is found to be smaller than earlier results but still present. New 0 n binary SF yields are reported. By gating on the light charged particles detected in Δ E-E detectors and γ-γ coincidence with Gammasphere, the relative yields of correlated pairs in alpha ternary fission with zero to 6 n emission are observed for the first time. The peak occurs around the α 2 n channel. A number of correlated pairs are identified in ternary fission with 10 Be as the light charged particle. We observed only cold, 0 n 10 Be and little, if any, hot, xn 10 Be channels.