THE EXOTIC TRANSFER REACTION (O-18,F-17) ON PT-198 - EXISTENCE AND MASS OF IR-199

摘要

A Q-value of -8.240-1 +/- 0.041 MeV has been determined for the exotic transfer reaction: Pt-198(O-18,F-17) Ir-199. This result yields a value of -24.425 +/- 0.041 MeV for the mass excess of the previously-unmeasured nucleus, Ir-199. Excited states in this nucleus are indicated in the region of 160 and 240 keV. The new result for the mass excess, together with existing ones, has been used to investigate systematic trends in the n-p interaction strength across the Z = 82 and N = 126 shell closures. [References: 16]