| Popis: |
Nanosecond lifetimes of several states in 147 Nd have been studied using the reaction 146 Nd(d, pγ) 147 Nd with 10 MeV deuterons. The following lifetimes were observed: the 7 2 − level at 49.9 keV, 2.5±0.5 ns; the 5 2 − level at 127.9 keV, ≦ 0.8 ns; the 9 2 − level at 190.3 keV, 1.1±0.3 ns and the 1 2 − level at 214.6 keV, 5.8±0.8 ns. The wave functions of the states were constructed using an axial particle-plus-rotor model. The free parameters used are compared to the systematics observed in the neighbouring heavier N = 87 isotones as well as in the N = 89 and 91 isotones. Transition rates within the f 7 2 and h 9 2 based excitations, separately, are reasonably well reproduced, but the connecting transitions indicate too strong a mixing of the shells in the calculation. |
