Abstract
Cyclotron bombardment of Rb with alpha particles and Sr with deuterons have yielded two new yttrium activities. decays with a half-life of 49.0±1.5 min. The isomer is supported by a highly converted 7.2-kev isomeric transition followed by a 210-kev gamma ray having a conversion coefficient . has a half-life of 3.19±0.06 hr, decaying to the ground state with emission of two gamma rays: 476 kev, kev, . Spin and parity assignments are made for the levels.
- Received 16 February 1961
DOI:https://doi.org/10.1103/PhysRev.123.184
©1961 American Physical Society