G. Seewald et al., MEASUREMENTS OF SPECTROSCOPIC QUADRUPOLE-MOMENTS OF NEUTRON-DEFICIENTIR ISOTOPES AND SHAPE COEXISTENCE IN IR-186, Physical review letters, 77(25), 1996, pp. 5016-5019
The spectroscopic quadrupole moments of the neutron deficient radioact
ive Ir isotopes Ir-184, Ir-186(g), Ir-186(m), Ir-187, Ir-188, and Ir-1
89 were measured with the technique of quadrupole-interaction-resolved
NMR on oriented nuclei. The ratio of quadrupole moments of the 2(-) i
someric state Ir-186(m) and the 5(+) ground state Ir-186(g) points to
different nuclear deformations in these states. In addition, we presen
t a new method for the unambiguous measurement of ground state spins.