Forty-nine states in ${\mathrm{Nd}}^{151}$ have been observed between the ground state and 2208 keV utilizing 10-MeV deuterons and the reaction ${\mathrm{Nd}}^{150}(d, p){\mathrm{Nd}}^{151}$. The ground-state $Q$ value for this reaction was measured as 3084±15 keV. Absolute cross sections of the proton groups were measured and angular distributions allowed the determination of $l$ values for eight of these groups. The interpretation of the experimental results was based upon the energy systematics in a deformed nucleus and the relative strengths of the ($d, p$) transitions in a deformed odd-$A$ nucleus. Levels are assigned as belonging to the $\frac{5}{2}-\left[523\right]\mathrm{}$, $\frac{3}{2}-\left[521\right]\mathrm{}$, ½-[530], and ½-[521] rotational bands. The ½-[521] rotational band is shown to be appreciably mixed with the $K-2\mathrm{}$ $\gamma$-vibrational bands built on the $\frac{5}{2}-\left[523\right]\mathrm{}$ and $\frac{3}{2}-\left[521\right]\mathrm{}$ bands. The comparison between the differing ground-state Nilsson orbitals in ${\mathrm{Nd}}^{151}$, ${\mathrm{Sm}}^{153}$, and ${\mathrm{Gd}}^{155}$ suggests increasing deformation in this sequence.

• Received 7 August 1967

DOI:https://doi.org/10.1103/PhysRev.164.1503