Hot Bimodal Ternary Fission In Cf-252

D Fong,M Jandel,Jh Hamilton,Av Ramayya,Jk Hwang,P Gore, J Kormicki,Yx Luo,J Kliman, L Krupa,Av Daniel,A Fomichev,Gs Popeko,A Rodin,Gm Ter-Akopian,Yt Oganessian,Jo Rasmussen,Ao Macchiavelli,Iy Lee,Ma Stoyer, R Donangelo,Jd Cole,W Greiner, D Poenaru

PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE FISSION AND PROPERTIES OF NEUTRON-RICH NUCLEI（2003）

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摘要

Spontaneous fission of Cf-252 was studied with 8 light charged particle detectors in Gammasphere. 9x10(5) alpha coincident events were recorded. In coincidence with LCP, the gamma-gamma matrix was analyzed. We obtained the relative yields of fission fragment pairs as a function of the neutron number. In the Ba-alpha-Zr and Mo-alpha-Xe splits, the 6n-10n channels show enhanced neutron emissions, just as previously found for the hot bimodal Ba-Mo binary yield. Two Gaussian curves describe the data, centered on 3.5 and 7 neutrons. For Mo-a-Xe, the average neutron numbers are approximately 3 and 6, and for Ba-alpha-Zr, approximately 3 and 8.

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