Fig. 5: Multipole nature of the γγ/γ decay.
From: Electromagnetic character of the competitive γγ/γ-decay from 137mBa
a Energy-sharing distribution for the two photons in the double-γ decay compared with the expected energy distributions of pure M2E2 and E3M1 decay, as well as the two-step E5 + M1 decay where the measured intensity8 has been subtracted from the 300 keV data point. The data points correspond to the sum of the differential branching ratio defined in Eq. (4) over all the available angles. b Two-dimensional goodness-of-fit, χ2, plot for the two α parameters with the experimental data. The contours are separated by one standard deviation. The data from the present work is shown as a black point, data from reference11 is shown as a red point, and a fit with the two data sets combines is shown as a purple point. The error bars represent the one standard-deviation statistical uncertainty, except the error bars in Eγ,low that represent the width of the energy bin.
