Eur. Phys. J. A 10, 5-10

The new isotope and its decay products and

S. Hofmann¹, F.P. Heßberger¹, D. Ackermann¹, S. Antalic², P. Cagarda², S. Cwiok³, B. Kindler¹, J. Kojouharova¹, B. Lommel¹, R. Mann¹, G. Münzenberg¹, A.G. Popeko⁴, S. Saro², H.J. Schött¹ and A.V. Yeremin<sup>4

1</sup>  Gesellschaft für Schwerionenforschung mbH, D-64220 Darmstadt, Germany
²  Department of Nuclear Physics, Comenius University, SK-84248 Bratislava, Slovakia
³  Faculty of Physics, Warsaw University of Technology, PL-00662 Warsaw, Poland
⁴  Flerov Laboratory of Nuclear Reactions, JINR, 141 980 Dubna, Russia

S.Hofmann@gsi.de

(Received: 27 November 2000 Communicated by D. Schwalm)

Abstract
The even-even nucleus ²⁷⁰110 was synthesized using the reaction ⁶⁴Ni + ²⁰⁷Pb. A total of eight -decay chains was measured during an irradiation time of seven days. Decay data were obtained for the ground-state and a high-spin K isomer. The new nuclei ²⁶⁶Hs and ²⁶²Sg were identified as daughter products after -decay. Spontaneous fission of ²⁶²Sg terminates the decay chain. The measured data are in agreement with calculations using the macroscopic-microscopic model and with self-consistent HFB calculations with Skyrme-Sly4 interaction.

PACS
21.10.Dr - Binding energies and masses.
23.60.+e - Alpha decay.
25.70.-z - Low and intermediate energy heavy-ion collisions.
25.85.Ca - Spontaneous fission.
27.90.+b - .

© Società Italiana di Fisica, Springer-Verlag 2001