A study of levels in 153Eu and 155Eu by the (3He, d) reaction

The (3He, d) reaction has been used with targets of 152Sm and 154Sm to study levels in 153Eu and 155Eu. The 28 MeV 3He beam was obtained from the University of Rochester model MP tandem Van de Graaff accelerator and the deuteron reaction products were analysed with a broad range magnetic spectrograph.The rotational bands based on the low-lying 52+[413], 52−[532], and 32+[411] states had been previously assigned in both nuclei. The present results confirmed these assignments and, in addition, located some of the higher spin members for these bands. The previous assignments of the 12+[411] orbital at 0.636 MeV in 153Eu and 0.768 MeV in 155Eu have been proven conclusively to be false.