Population of rotational bands in superheavy nuclei
Joint Institute for Nuclear Research, 141980 Dubna, Russia
2 Yerevan State University, 0025 Yerevan, Armenia
3 Institute of Nuclear Physics, Tashkent 702132, Uzbekistan
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.
© Owned by the authors, published by EDP Sciences, 2012