Wood Va

The identical bands in177Ta

The [402]5/2 bands in177Ta which are “identical” to the neighboring even-even176Hf groundstate band have been extended to higher angular momentum. These bands in the two nuclei are seen to diverge from each other in the region of the first i13/2 neutron alignment. The lower observed crossing frequency for the [402]5/2 bands indicates a lower deformation for these bands compared to176Hf. Extensions to theh9/2 [541]1/2 yrast band are also reported.

Weak coupling in [sup 143]Nd

High-spin states of [sup 143]Nd have been studied using the [sup 130]Te([sup 18]O,5[ital n]) reaction at 85 MeV. The yrast states observed up to a tentatively assigned spin of 45/2 can be described in a remarkably simple way by the weak coupling of an [ital f][sub 7/2] neutron to the [sup 142]Nd core nucleus. Our results demonstrate that [sup 143]Nd is one of the best known examples of weak coupling at high angular momentum.

Possibleπ(h 11 2/3 g 7 2/−1 ) states in144Nd

High spin states of the nucleus144Nd have been studied using the techniques of gamma-ray spectroscopy and the130Te(18O,4n) reaction at 85 MeV. It is suggested that a sequence of states having J=17–24 arises from the coupling of the h12/3g72−1 proton configuration to the f72/2 and f7/2h9/2 neutron configurations.