Decay of ¹⁰⁹Rh

New lifetime measurements inPd109and the onset of deformation atN=60

“…[28]. The γ-intensity ratio between the 266-keV and 153-keV transitions measured here was consistent within experimental uncertainties with the value measured by Kanazawa et al [37], but not consistent with the value measured by Casten et al [38]. Our value for the intensity of the 266-keV γ ray per 100 γ rays of 153 keV is 64 (13), while those previous measurements recorded 41.7(90) [37] and 28.9(41) [28,38], respectively.…”

“…Five new levels and associated γ rays (colored blue and red in the figure) were added to the β-decay scheme of 109 Pd based on the γ-γ coincidence results. The other levels (black) were observed in earlier measurements by Fettweis and Marmol [40] and Kanazawa et al [37] and verified in this experiment. Four of the five new levels were observed in the 108 Pd(n,γ) ex- [37,38].…”

“…To calculate reduced transition probabilities B(Mλ), γ-ray branching intensities were taken from Refs. [37,38]. In many cases, the transition multipolarities (M 1/E2 ratios) were determined from conversion-electron coefficients measured in Ref.…”

“…For γ rays with energies less than 90 keV, the M 1/E2 mixing ratios and intensities were taken from Ref. [37]. It is worth mentioning that none of these low-energy transitions were adopted in the evaluation of Ref.…”

“…Since the transition energy is so close to the Pd K-shell electron binding energy (24.35 keV), the BrIcc calculator was unable to calculate the K-shell conversion coefficient, nor does an experimental value exist. Kanazawa et al do provide an upper limit for the E2 strength, presumably by measuring the L-shell and/or M-shell conversion coefficients [37]. By measuring the total intensity through γ-γ coincidences, they establish a rough γ-ray intensity which was adopted here.…”