Abstract
Two new emitters and were identified through the observation of the -decay chain. The nuclei were produced in the fusion-evaporation reaction and studied using the Recoil Mass Spectrometer at the Holifield Radioactive Ion Beam Facility. Two transitions at and were interpreted as the and transitions from the ground state in () to the ground state and a excited state, located at in . The observation of the subsequent decay of marks the discovery of the lightest known -decaying nucleus. The measured transition energy and half-life were used to determine the reduced -decay width . The ratio of indicates a superallowed character of the emission from .
- Received 16 May 2006
DOI:https://doi.org/10.1103/PhysRevLett.97.082501
©2006 American Physical Society