Observation of enhanced nuclear stability near the 162 neutron shell

Autor: Yu.A. Lazarev, Yu. V. Lobanov, I. V. Shirokovsky, F. Sh. Abdullin, R. W. Lougheed, B. N. Gikal, Kenton J. Moody, I.M. Sedykh, A. M. Sukhov, V. G. Subbotin, J.H. McQuaid, J. F. Wild, Yu. Ts. Oganessian, G.V. Buklanov, S. Iliev, Yu. S. Tsyganov, E.K. Hulet, V. E. Zhuchko, A. N. Mezentsev, A. N. Polyakov, V. K. Utyonkov
Rok vydání: 1994
Předmět:
Zdroj: Journal of Alloys and Compounds. :61-66
ISSN: 0925-8388
Popis: In bombardments of 248Cm with 22Ne we discovered two new isotopes, 265106 and 266106, by establishing genetic links between α decays of the 106 nuclides and spontaneous fission (SF) or α decays of the daughter (or granddaughter) nuclides. For 266106 we measured Eα = 8.63 ± 0.05 MeV followed by the SF decay of 262104 for which we measured a half-life value of 1.2+1.00.5 s. For 265106 we measured Eα = 8.71–8.91 MeV. We estimated α half-lives of 10–30 s for 266106 and 2–30 s for 265106 with SF branches of approximately 50% or less. The decay properties of 266106 indicate a large enhancement in the SF stability of this N = 160 nuclide and confirm the existence of the predicted deformed shells N = 162 and Z = 108.
Databáze: OpenAIRE