Measurements of multipolarities in 225Ra

Multipolarities of 45 transitions in 225Ra have been established by investigating the radiations associated with the β− decay of 225Fr. The study includes β−, e− and γ-singles spectra, e−γ- and γγ-coincidence measurements. The conversion electrons were measured with a mini-orange electron spectrometer, and the γ-spectra with Ge detectors. The multipolarities obtained from the measured conversion coefficients support the assignments of …