The excited states of 85Sr

Beta-decay energies and masses of short-lived isotopes of rubidium, caesium, francium, and radium

“…The energies and relative intensities of fi-coincident y-rays below 1.2 MeV observed in the present experiment are listed in Table 3. Besides the comparison shown in Table 3 general agreement is found also with other recent y-ray data [41,42]. A FK analysis of the fi spectra in coincidence with the y lines at 179 and 394 keV, shown [39,41] [39,41], we obtain the following value for the total decay energy of 7VRb:…”

“…Dietrich et al [39] and extended recently by Liptak et aL [41]. The energies and relative intensities of fi-coincident y-rays below 1.2 MeV observed in the present experiment are listed in Table 3.…”

Resolution of a discrepancy in the γ -ray emission probability from the β decay of Ceg137

“…However, Peker in the revised evaluation [19] suggested a value of %P γ (447) = 1.78 (8), using the time-dependent factor. Since then this value remains nearly the same and in the latest evaluation Browne and Tuli [20] proposed a value of 1.68 (6) considering the conversion coefficient data from Kibedi et al [21]. Recently, for the 136 Ce(n, γ ) 137 Ce g reaction cross-section measurements Torrel and Krane [22] used %P γ (447) = 1.69, mentioning that it was determined from their measurement.…”

“…γ -ray emission probabilities P γ are basic nuclear data widely used in nuclear research, nuclear engineering, and medical applications. In addition to direct measurement of P γ with different experimental techniques, such as 4πβγ measurements [1,2] or implantation and subsequent decay of parent nuclides in coincidence [3,4], other measured quantities, like absolute x-ray intensity [5], annihilation radiation [6,7], a complete γ -ray decay scheme [8], etc., have frequently been used to extract the γ -ray emission probabilities. Furthermore, relative γ -ray intensities in secular (parent half-life â daughter half-life) or transient equilibrium (parent half-life > daughter half-life) have also been used to deduce γ -ray emission probabilities of the daughter/parent radionuclides relative to that of their parent/daughter [2,9].…”

“…The main motivation for the study of the 85 Y g decay was to verify whether the reported relative intensity of the 232-keV γ ray from the 85 Sr m decay in Ref. [6], in transient equilibrium with 85 Y g , was corrected or not for the time-dependent factor.…”