Measurement of the quadrupole moment of the5−level inHg206

Abstract

The quadrupole coupling constant of the n(h~~~2 s~q'2) isomer in polycrystalline Hg at 225 K has . been measured by means of the perturbed angular distribution method. The result is e'Qq/h =136.5+3 MHz, from which we deduce eg =65+13 e fm' and an effective charge e,ff(m.h llg2) =(2.2+0.5)e.

Multipleβ−decaying states in194Re: Shape evolution in neutron-rich osmium isotopes

“…These have been performed for both the prolate and oblate deformations in this nucleus assuming axial symmetry, see In the A ∼ 190 region, for even-even Hf-Pt (Z = 72 → 78) nuclei, the lighter isotopes are prolate deformed and as more and more neutrons are added the shape becomes oblate [1,2]. As the closed shell at N = 126 is approached, the shape of the nuclus is predicted to become spherical [5,6]. For the prolate-oblate transition region, the nuclei have a potential with similar energy minima corresponding to prolate and oblate shapes [17].…”

Investigation of203, 205Hg with the (d, p?) reaction ? Identification of thei 13/2 neutron hole state in205Hg

“…In-beam investigations of quadrupole interactions for Hg isotopes have been reported with frozen Hg targets [15,16]. From these measurements we estimate a time period around 1 gs for the quadrupole modulation pattern of the 13/2 + isomers.…”

Isomeric states observed in heavy neutron-rich nuclei populated in the fragmentation of a208Pb beam

“…These are an I π = 5 − , T 1/2 = 2.15(21) μs state [3][4][5]30] and an I π = (10 + ), T 1/2 = 92(8) ns state [5,30], which has 100% feeding to the lower-lying isomer. Our measured half-lives of T 1/2 = 2.09(2) μs and T 1/2 = 112(4) ns agree with the previously published values.…”