Abstract
The half-life of the superallowed Fermi emitter O has been determined via simultaneous direct and counting experiments at TRIUMF's Isotope Separator and Accelerator (ISAC) facility. A -ray counting measurement was performed by detecting the 2312.6-keV rays emitted from an excited state of the daughter N following the implantation of samples at the center of the 8 -ray spectrometer, a spherical array of 20 high-purity germanium (HPGe) detectors. A simultaneous counting experiment was performed using a fast plastic scintillator positioned behind the implantation site with a solid angle coverage of 20. The results, and , form a consistent set and, together with eight previous measurements, establish a new average for the O half-life of with a reduced of 0.99.
3 More- Received 1 May 2013
DOI:https://doi.org/10.1103/PhysRevC.88.015501
©2013 American Physical Society