Phys.Rev. C 87, 054621 (2013)

Yu.Ts.Oganessian, F.Sh.Abdullin, C.Alexander, J.Binder, R.A.Boll, S.N.Dmitriev, J.Ezold, K.Felker, J.M.Gostic, R.K.Grzywacz, J.H.Hamilton, R.A.Henderson, M.G.Itkis, K.Miernik, D.Miller, K.J.Moody, A.N.Polyakov, A.V.Ramayya, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.V.Shumeiko, M.A.Stoyer, N.J.Stoyer, V.G.Subbotin, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin

Experimental studies of the ²⁴⁹Bk+⁴⁸Ca reaction including decay properties and excitation function for isotopes of element 117, and discovery of the new isotope ²⁷⁷Mt

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, 3n), (⁴⁸Ca, 4n), E=243.7, 255.7, 259.8 MeV; measured σ(E) for production of ^293,294Ts using DGFRS separator at FLNR, JINR facility. Comparison with theoretical calculations.

RADIOACTIVITY ^293,294Ts, ^289,290Mc, ^285,286Nh, ^281,282Rg, ²⁷⁸Mt, ²⁷⁴Bh(α)[from α decay chains of ²⁹³Ts and ²⁹⁴Ts formed in ²⁴⁹Bk(⁴⁸Ca, 3n), (⁴⁸Ca, 4n), E=243.7, 255.7, 259.8 MeV]; measured Eα, Iα, half-lives. ²⁷⁰Db, ²⁷⁷Mt, ²⁸¹Rg(SF); measured decay energy, half-lives. ²⁸¹Rg(α), (SF); measured α/SF branching ratio. ²⁷⁷Mt; identified new isotope. Systematics of Q(α), SF- and α-decay half-lives for isotopes in Z=104-117, N=150-177 regions.

doi: 10.1103/PhysRevC.87.054621