Experiments to Produce Odd-Mass Neutron-Deficient Isotopes of Superheavy Elements by exp 48 Ca Ion-Induced Reactions

摘要

Experiment to produce neutron-deficient isotopes of superheavy elements in the reactions exp 233 U ( exp 48 Ca, 2n) exp 279 112, sup(231)Pa( exp 48 Ca, 3n)sup(276)111 and sup(232)Th( exp 48 Ca,2-3n)sup(277-276)110 have been carried out using a heavy ion beam of the U-300 accelerator. In these reactions, the upper limits of production cross sections and spontaneous-fission half-lives been determined to be 7x10 exp -35 cm exp 2 , 5x10 exp -35 cm exp 2 and 2x10 exp -35 cm exp 2 , and 0.05 s, 0.003 s and 0.003 s, respectively. (Atomindex citation 09:406853)