Pd109: Difficulties in particle-rotor models for unique-parity states and revision of spectroscopic factors

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.…”

“…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]. The M 1/E2 ratios are based on measurements of various K-, M-, and L-shell electron conversion coefficients.…”

“…The total conversion coefficients (αtot) displayed in the table and used to determine the B(Mλ)'s were calculated using the BrIcc conversion calculator [39]. a Measured total transition intensity (Itot = Iγ + Ice), see text periment by Casten et al [38], however one new level has been added at 765 keV with two γ rays of energies 489 and 339 keV depopulating it as well as five additional new γ rays distributed between the previously observed levels at 1319, 1054, and 541 keV. Measured β-feeding and γ-ray intensities have not been provided due to the difficulty for this experiment to provide precise values as a result of the triple coincidence requirement.…”

“…In many cases, the transition multipolarities (M 1/E2 ratios) were determined from conversion-electron coefficients measured in Ref. [38]. For γ rays with energies less than 90 keV, the M 1/E2 mixing ratios and intensities were taken from Ref.…”

“…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.…”