Decay ofIn127andIn129

New sub-μs isomers in125,127,129Snand isomer systematics ofLozeva1, Simpson2, Grawe3 et al. 2008Phys. Rev. C

“…Refs. [10,36]. The decay scheme of the 19/2 + isomer is confirmed in this work, although the 23/2 + isomer decaying by a 104 keV isomeric transition was not observed due to the low efficiency of the Ge detector setup at such low γ -ray energies.…”

“…[12,36] are confirmed here, though the low-energy decays of the 3.6(2) µs 19/2 + isomer (19.7 keV) and the 2.4(2) µs 23/2 + isomer (41.0 keV) were not observed. A BG-subtracted energy spectrum from the end of the time range (as for 125 Sn and 127 Sn) is presented in Fig.…”

“…The sum of the 1931 keV 23/2 + isomeric level and the new 480 keV transition also gives a similarly consistent energy of 2411 keV. Note that a 952 keV transition was observed in β-decay studies [36] and placed in the decay scheme in a cascade with the 1095 keV transition. However, no spin-parity (I π ) suggestions for this state were made.…”

“…4(a), which represents data from both 238 U fission and 136 Xe fragmentation. This isomer was not observed in previous isomer studies of this nucleus [10], due to its short half-life, and was not populated in β-decay studies [36], due to its high spin.…”

“…The (23/2 + ) state has already been observed as an isomer in the neighboring 123,127,129 Sn nuclei [2,12,36]. Two previous experiments [1,10] studying 125 Sn at intermediate spin were unable to observe the (23/2 + ) isomer due to poor particle identification and a lack of statistics, respectively.…”