Perturbed Gamma-Gamma Directional Correlation inCd114

The directional correlation of the 722-556 kev gamma-gamma cascade in ${\mathrm{Cd}}^{114}$ following $K$-capture in ${\mathrm{In}}^{114}$ has been observed as a function of physical and chemical state of the source. Dry In${\mathrm{Cl}}_3$ and frozen solutions thereof are consistent in giving an attenuation factor 0.77±0.08 in the anisotropy. The lifetime of the intermediate state is found to be ≤2.3×${10}^{-10\mathrm{}}$ sec. Assuming that the perturbing interaction is electric and making a crude estimate of an upper limit in the electric field gradient at the nucleus, one obtains a quadrupole moment $\mathrm{}\left|Q\right|\mathrm{}>~0.4\times {10}^{-24\mathrm{}}$ ${\mathrm{cm}}^2$ for the intermediate state of the cascade.