Levels of 178Hf Populated in the Decay of 178m,gLu
- 1 February 1975
- journal article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 38 (2) , 314-321
- https://doi.org/10.1143/jpsj.38.314
Abstract
Decay of 178m,g Lu has been studied by using Ge(Li), NaI(Tl) and plastic detectors. Sources were prepared by the 179 Hf(γ, p) 178m,g Lu reaction. Thirty-nine of forty γ-rays are assigned to the 178 Hf level scheme, which includes six newly observed levels at 1174.4( I π K =2 + 2), 1199.3(0 + 0), 1276.8(2 + 0) and 1322.4(3 - 2) keV in the 178g Lu decay and at 1364.04(9 - 8) and 1601.6(10 - 8) keV in the 178m Lu decay. Q β values are 2.05±0.05 MeV for 178g Lu and 2.25±0.03 MeV for 178m Lu. The most probable spin-parity assignments of 1 + and 9 - are proposed for the ground and isomeric states of 178 Lu, respectively. There is reasonable agreement between the experimental β branching ratios from 178m Lu to the 8 - band at 1147 keV and the Alaga rules. Discussions on the 178 Hf levels are made mainly on the basis of log f t values.Keywords
This publication has 20 references indexed in Scilit:
- The (p, t) reactions on nuclei in the rare earth regionNuclear Physics A, 1973
- Levels in 178Hf studied in the (n, γ) reactionNuclear Physics A, 1971
- Low Angular Momentum States Populated in the Decay of 178LuCanadian Journal of Physics, 1971
- Excited states in 178Hf from resonance neutron-capture gamma-ray studiesNuclear Physics A, 1969
- Decay of an isomeric state in 178Hf withNuclear Physics A, 1968
- Decay of 178g, mLuJournal of the Physics Society Japan, 1967
- The Kπ = 0+ bands of 178Hf and the allowed unhindered beta transformations of 9.3 min 178Ta and 22 d 178WNuclear Physics A, 1967
- Decay of 2.1-HourTa178Physical Review B, 1962
- New Activities in Rare Earth Region Produced by the (γ, p) ReactionsJournal of the Physics Society Japan, 1961
- A short-lived heavy isotope of lutetiumPhysica, 1960