α decay of the πh11/2 isomer in Ir164
Drummond, M., O'Donnell, D., Page, R., Joss, D., Capponi, L., Cox, D., . . . Uusitalo, J. (2014). α decay of the πh11/2 isomer in Ir164. Physical Review C, 89 (6), 064309. doi:10.1103/PhysRevC.89.064309
Published inPhysical Review C
©2014 American Physical Society. This is an article whose final and definitive form has been published by American Physical Society.
The α -decay branch of the πh 11 / 2 isomer in 164 Ir has been identified using the GREAT spectrometer. The 164 Ir nuclei were produced using the 92 Mo( 78 Kr ,p 5 n ) 164 Ir reaction and separated in flight using the recoil ion transport unit (RITU) gas-filled separator. The measured α -decay energy of 6880 ± 10 keV allowed the excitation of the πh 11 / 2 state in 160 Re to be deduced as 166 ± 14 keV. The half-life of 164 Ir was measured with improved precision to be 70 ± 10 μ sandan α -decay branching ratio of 4 ± 2% was determined. Improved half-life and branching ratio measurements were also obtained for 165 Ir, but no evidence was found for the ground-state decays of either 164 Ir or 165 Ir.
PublisherAmerican Physical Society