Abstract
The decay of to levels of odd-odd has been studied in experiments in which γγt coincidence, γγt(θ) angular correlation, γ-ray singles, and time-dependent γ-ray spectra were collected. The activity was produced directly by on-line mass separation from the fission products of the (,f) reaction. The half-life of was determined to be 2.22±0.07 sec. A level scheme containing 48 levels and 231 γ rays is proposed for . Spin and parity for some levels below 1.2 MeV are assigned on the basis of angular correlation measurements and β-ray branching. Details of the level scheme are discussed within the context of the level systematics of neighboring odd-odd La isotopes and N=89 odd-odd isotones.
- Received 25 January 1985
DOI:https://doi.org/10.1103/PhysRevC.31.2199
©1985 American Physical Society