Levels in <sub>60</sub><sup>146</sup>Nd populated by the (n,n'γ) reaction
T J Al-Janabi; J D Jafar; H M Youhana; A M Demidov; L I Govor; T J Al-Janabi; Nuclear Res. Centre, Baghdad, Iraq; J D Jafar; Nuclear Res. Centre, Baghdad, Iraq; H M Youhana; Nuclear Res. Centre, Baghdad, Iraq; A M Demidov; Nuclear Res. Centre, Baghdad, Iraq; L I Govor; Nuclear Res. Centre, Baghdad, Iraq
Журнал:
Journal of Physics G: Nuclear Physics
Дата:
1983-07-01
Аннотация:
Levels in <sup>146</sup>Nd have been studied using the (n, n' gamma ) reaction with reactor fast neutrons. Excited states up to 3.2 MeV were populated. Angular distributions of gamma rays with respect to the neutron beam have been measured. Seven new states at 1602.7, 1918.9, 2119.5, 2208.4, 2756.9, 3058.6 and 3179.0 keV have been proposed and assigned as J<sup>pi </sup>=0<sup>+</sup>, 4<sup>+</sup>, 2<sup>+</sup>, 2<sup>+</sup>, (1,2), 5<sup>+</sup> and (3,5)<sup>+</sup> respectively. Spin values of eleven of the previously known levels have been determined for the first time and spin restrictions placed on seven additional levels. The angular distributions of gamma rays from twelve other levels were consistent with their previously established spin assignments. The mixing ratios for several gamma transitions were deduced and compared, where possible, with values obtained by the 'complete alignment method' and with those previously reported by other authors. The levels of <sup>146</sup>Nd have been compared with IBA model predictions.
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