Nuclear levels in 190Ir studied with the 192Os(p,3nγ) and 192Os(d,4ne−) reactions

Evaluated Iridium, Yttrium, and Thulium Cross Sections and Integral Validation Against Critical Assembly and Bethe Sphere Measurements

“…Note that the new level scheme observed for 191 Ir [45], thought to be similar to levels in 193 Ir, indicates the presence of such highspin states, and therefore provides some justification for this assumption. The result of this modified calculation (green line in Fig.…”

“…In earlier evaluations, the electron capture probability was taken as 94.4%. However, a more recent estimate by P. Garrett [45] puts this value at 91.4% instead. We have adopted this new value.…”

“…Specifically, recent GEANIE data assessing 191 Ir(n, xnγ) excitation functions [42,43], along with Garrett et al data [44,45], enable a new and improved analysis of neutron-induced reactions on 191 Ir. The new evaluation and ENDF file, LANL2006, was based in part on new GNASH calculations and on the measured data (cross sections and nuclear structure spectroscopy):…”

“…Thanks to the experimental data of Garrett [44,45] and Fotiades [42,43,49], we could compute the production cross section for a third isomeric state (state (4)+ at 36.1 keV, T 1/2 =1.4 ms). All states included in our final ENDF file are given in Table V. The calculated cross section of 191 Ir (n, 2n) 190 Ir is shown in Fig.…”