Second experiment at VASSILISSA separator on the synthesis of the element 112
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- Oganessian, Y.T., Yeremin, A.V., Popeko, A.G. et al. Eur. Phys. J. A (2004) 19: 3. doi:10.1140/epja/i2003-10113-4
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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 \(280 \leq A \leq 286\) 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.