Abstract
Proton emission from was observed for the first time via the reaction, using the Holifield Radioactive Ion Beam Facility Recoil Mass Spectrometer in conjunction with a double-sided Si strip detector at the focal plane. The measured energy of the emitted proton is 1.728(10) MeV and its half-life is 3.5(10) μs, the shortest ever observed for ground-state proton radioactivity. When compared to the calculated WKB half-life for an transfer, the spectroscopic factor is 0.51(16), which is consistent with the value of 0.64 calculated via the BCS approximation for a spherical nucleus. Also, the half-life of was determined with a greater precision than previously available to be 16.7(7) μsec.
- Received 1 December 1997
DOI:https://doi.org/10.1103/PhysRevC.57.R1042
©1998 American Physical Society