α decay of the πh11/2 isomer in Ir164
Drummond, M. C., O'Donnell, D., Page, R. D., Joss, D. T., Capponi, L., Cox, D. M., Darby, I., Donosa, L., Filmer, F., Grahn, T., Greenlees, P., Hauschild, K., Herzan, A., Jakobsson, U., Jones, P., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., . . . Uusitalo, J. (2014). α decay of the πh11/2 isomer in Ir164. Physical Review C, 89(6), Article 064309. https://doi.org/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