Levels of 234U and 236U excited by the (d, d') reaction

Abstract

The energy levels of 234U and 236U have been studied through the inelastic scattering of 16 MeV douterons. A magnetic spectrograph was used to momentum-analyse the scattered deuterons at θ = 90° and 125°. Excited in both 234U and 236U were the ground state bands up to and including the 8 + members, the K π = 0 + β-vibrations, the K π = 2 + γ-vibrations, and the K π = 0 − octupole vibrational bands. In 234U, additional levels at 1023 and 1126 keV are ascribed to a K π = 2 − band, levels at 1238, 1312, and 1446 keV are identified as members of either a K π = 0 − or 1 − configuration, and other tentative assignments are made for members of K π = 1 − and 3 − configurations. Relative reduced transition probabilities, B(E2), to the 2 + rotational and γ-vibrational states are generally found to be in good agreement with Coulomb excitation measurements. Relative B(E3) values for the 3 − states excited are slightly higher than the predictions of a microscopic theory of octupole vibrations.