Population of rotational bands in superheavy nuclei
A. S. ZubovJoint Institute for Nuclear Research, 141980 Dubna, RussiaV. V. SargsyanJoint Institute for Nuclear Research, 141980 Dubna, RussiaG. G. AdamianInstitute of Nuclear Physics, Tashkent 702132, UzbekistanN. V. AntonenkoJoint Institute for Nuclear Research, 141980 Dubna, Russia
ABI
Abstract
Using the statistical approach, we study the population of ground-state rotational bands of superheavy nuclei produced in the fusion-evaporation reactions 208Pb(48Ca, 2n)254No, 206Pb(48Ca, 2n)252No, and 204Hg(48Ca, 2n)250Fm. We calculate relative intensities of E2-transitions between the rotational states and entry spin distributions of the residual nuclei, evaporation residue cross sections, and excitation functions for these reactions. Fermi-gas model is used for the calculation of level density, and damping of shell effects both with excitation energy and angular momentum is taking into account. The results are in a good agreement with the experiment data.
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