Electromagnetic moments of transitions in 191Ir, 1931Ir following coulomb excitation

The low-energy level structure and the electromagnetic properties of191Ir and193Ir

“…The magnetic moments have been recalculated for this value of ~(139 keV). Our theoretical value is in good agreement with measurements of Avida et al [27]; the previous calculations [11] had predicted # (139 keV) to be 1.40 nm a value which is 75 per cent more than the experimental results. The value of the g-factor of the d3/2 proton, gp, as determined from our analysis is close to the single particle estimate.…”

“…The core g-factor, gc, for the neighbouring even-even nuclei has been calculated to be around 0.57, a value which is consistent with the results of other theoretical calculations on Ir and Au nuclei [2,11] but is, inconsistent with the experimental results on the g-factors of the 2 + state in 192pt and x94pt [31]. The magnetic moment of the low-lying 5/2 + state in both the Iridium nuclei has been satisfactorily explained.…”

“…Its value was found to be 6.47. It may be pointed out that the value estimated for this matrix element by Avida et al [11] is in error by almost a factor of two.…”

“…The low-lying positive parity states in 191Ir and 19air nuclei are similar to that of 197Au, whose static and transition moments can be well accounted for on the weak particle-core coupling model [1][2][3][4]. Recently the level structure and the transition rates in 19qr and ~93Ir have been investigated in detail by radioactivity [5][6][7][8] and Coulomb excitation [9][10][11] experiments. The results have been primarily interpreted on (i) the core-excitation model [1] and (ii) the Nilsson model [12] with the inclusion of the Coriolis coupling [13].…”

“…[5,7,25] was used while for the B(E2) of the 7/2 ~ (3/2)~ transition, the average of the results given in Ref. [7,11,25] was used. The following parameters gave the best fit to the experimental results:…”