Proton states in193Ir and195Ir populated via the (?) reaction

Abstract

The nuclear structures of 193Ir and 195Ir have been studied using the 194pt(t,~) and 196pt(t, c0 reactions. Levels up to ~2MeV in excitation energy were studied with a resolution of ~ 13 keV (FWHM) and spectroscopic strengths were extracted. The lowlying states in 193Ir have been interpreted in terms of both the Nilsson and the rotationvibration models including Coriolis, particle-vibration and rotation-vibrational coupl- . Surprisingly, there was no significant difference between the stripping and pick-up strengths for the low-lying states in 193Ir, suggesting that the equilibrium nuclear shape of 193Ir has large overlaps with the shapes of both 192Os and 194pt. The nuclear level structure of 195Ir appears to be similar to those of the lighter iridium isotopes.

Nuclear levels in166Ho: Evidence for a large configuration mixing

“…1. Excitation energies of peaks in the alpha particle spectrum were determined using the energies of known peaks in the 19~*pt(r, ~)193Ir spectrum for calibration [10]. Intercepts of Eexc=0 were determined at each angle for the 166Ho spectra from 10 previously known states in the ground state and 3+ [411]_+7 + [633] configurations of 166Ho.…”