Explicitγ−γAngular Correlations. II. Polarization Correlations

The $\gamma -\gamma$ angular correlation function for the case where one or both of the $\gamma$-ray detectors is able to discriminate between plane polarization states of a $\gamma$-ray is given in terms of the corresponding $\gamma -\gamma$ directional correlation. The formulas given are directly applicable to one-three type correlations in a triple cascade, and also to direction-plane polarization correlations in which the unpolarized particle is not necessarily a $\gamma$-ray, e.g., $\beta$-polarized $\gamma$. Correlations for the case where the detectors are sensitive to circular polarizations are not treated.