Second experiment at VASSILISSA separator on the synthesis of the element 112
Flerov Laboratory of Nuclear Reactions, JINR, 141980, Dubna, Russia
2 Gesellschaft für Schwerionenforschung, D-64220, Darmstadt, Germany
3 Comenius University, SK-84215, Bratislava, Slovakia
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The upgraded separator VASSILISSA was used to confirm results of previous experiments on the synthesis of the heavy isotopes of the element 112 obtained in complete-fusion reactions of 48Ca and 238U. An additional reason was the non-observation of any events in the same reaction studied with the BGS separator at Berkeley. Limits of for the atomic mass number of the observed spontaneously fissioning isotope were measured. The obtained results on the decay mode, half-life and production cross-section are in agreement with those obtained in our first experiment.
© Società Italiana di Fisica and Springer-Verlag, 2004