EPJ Web of Conferences 21, 06002 (2012)
https://doi.org/10.1051/epjconf/20122106002

Population of rotational bands in superheavy nuclei

¹ Joint Institute for Nuclear Research, 141980 Dubna, Russia
² Yerevan State University, 0025 Yerevan, Armenia
³ Institute of Nuclear Physics, Tashkent 702132, Uzbekistan

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.