Abstract
Gamma rays decaying from the excited states of the proton-unbound were observed for the first time in an experiment using the reaction. These γ rays were identified by correlating prompt γ radiations at the target position with proton radioactivities at the focal plane of a recoil mass separator. Systematic data on isotones suggest a possible isomeric level at high spin in Our measurement was unable to observe such an isomer, but provided an upper limit on its half-life. The observed γ rays in can be interpreted in terms of two possible level structures.
- Received 23 September 1998
DOI:https://doi.org/10.1103/PhysRevC.58.R3042
©1998 American Physical Society