Coulomb excitation of 235U

Abstract

The Coulomb excitation of 235U has been studied using 4He, 16O, and 40Ar projectiles. Rotational bands at 921 keV and 638 keV (tentative) have been characterized as the K 0 + 2 and K 0−2 γ-vibrational bands, respectively, and a somewhat tentative band at 1053 keV has been assigned as the β-vibrational band based on the ground state. Two bands at 633 and 822 keV are identified as the 5 2 −[752] and 9 2 −[734] Nilsson states, respectively. The large B(E2) value for exciting these bands indicates that they are strongly Coriolis coupled to the ground state band, 7 2 −[743] . A three-parameter Coriolis calculation, involving all eight components of the j 15 2 shell-model orbital, can account adequately for all the rotational energies and transition probabilities observed in these three bands.