Abstract
With the use of an on-line isotope separator, (=0.9±0.2 s) was identified in bombardments of . Seven γ rays were observed to follow the isotope’s (+electron capture) decay, including the 111.3-keV transition known from isomeric decay to be the (111.3 keV)→ (0.0 keV) γ ray in . In addition to the previously known levels at 111.3 () and 741.5 () keV in , our data establish three other excited states, at 907.4 ), 1066.2 ), and 1482.9 , ) keV. Coincidences observed between Er K x rays and protons in the A=149 mass chain show that is a β-delayed proton precursor.
- Received 23 March 1987
DOI:https://doi.org/10.1103/PhysRevC.36.826
©1987 American Physical Society