FIZIKA B 1 (1992) 3, 221-230

METASTABILITY OF a-STABLE NEUTRON-RICH NUCLEI

D. N. POENARU and W. GREINER
Institut für Theoretische Physik der Universität, Pf. 111932, D-6000 Frankfurt am Main, Germany
and Gesellschaft für Schweionenforschung, Pf. 110552, D-61000 Darmstadt, Germany
R. GHERGHESCU and D. MAZILU
Institute of Atomic Physics, P.O.Box MG-6, RO-76900 Bucharest, Romania

Received 9 November 1992

Cluster radioactivities of nuclei far from beta-stability line in the neutron-rich region, where a-decay is not allowed, have been systematically studied within analytical superasymmetric fission model. Input mass tables calculated by various authors were used to determine the released energy. Half-lives shorter than 10³⁰ seconds have been estimated for very neutron-rich parent nuclei with atomic numbers form 57 to 86. The emitted clusters are also proton-deficient nuclei, as for example ²²O, ⁴⁶S, ⁵⁰Ar, ⁷⁶Fe, ⁷⁸Ni, etc.

UDC 539.16

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