Strength of Coriolis alignment in actinide nuclei

Abstract

Analysis of aligned angular momenta ${i}_{\ensuremath{\alpha}}(\ensuremath{\omega})$ in different rotational bands extracted from experimental data with a linear spin term $\ensuremath{\sim}\mathrm{BI}$ in the formulas for ${E}_{\mathrm{rot}}(I)$ reveal that, in actinide nuclei in the levels with modest spin $I\ensuremath{\le}23$, ${i}_{\ensuremath{\alpha}}(\ensuremath{\omega})$ usually is very small ($\ensuremath{\lesssim}0.7$); i.e., is much smaller than in rare earth nuclei.[NUCLEAR STRUCTURE $^{226}\mathrm{Ra}$, $^{232}\mathrm{Th}$, $^{232\ensuremath{-}238}\mathrm{U}$, $^{235}\mathrm{U}$, $^{237}\mathrm{Np}$; analyzed intra-band level energies and Coriolis alignment strength.]