Gyromagnetic Ratio of2+Rotational States

Abstract

The angular distribution of gamma rays following Coulomb excitation of millimicrosecond $2^{+}$ states in ${\mathrm{Nd}}^{150}$, ${\mathrm{Sm}}^{152}$, ${\mathrm{Sm}}^{154}$, ${\mathrm{Gd}}^{154}$, ${\mathrm{Gd}}^{156}$, and ${\mathrm{Gd}}^{160}$ were investigated. The gamma-ray angular distributions from solid oxide targets showed substantial perturbations. The attenuation coefficients for liquid nitrate targets were measured to be: ${\mathrm{Nd}}^{150}$, ${G_2}^L=1\mathrm{}\pm 0.035$; ${\mathrm{Sm}}^{152}$, ${G_2}^L=1\mathrm{}\pm 0.035$; ${\mathrm{Sm}}^{154}$, ${G_2}^L=1.1\mathrm{}\pm 0.10$; ${\mathrm{Gd}}^{154}$, ${G_2}^L=0.5\mathrm{}\pm 0.06$; ${\mathrm{Gd}}^{156}$, ${G_2}^L=0.6\mathrm{}\pm 0.04$; ${\mathrm{Gd}}^{160}$, ${G_2}^L=0.6\mathrm{}\pm 0.06$. The influence of the paramagnetic ion and the liquid environment on the angular distributions are discussed.