Abstract
The excited states of 141 Pr up to 1800 keV were studied by means of Coulomb excitation of 141 Pr with protons of energies from 4.0 to 5.5 MeV. The gamma-ray yields and angular distributions were measured with a Ge(Li) detector. The levels in 141 Pr at 1348, 1580.3, 1608.4 and 1785 keV were observed in Coulomb excitation for the first time. The results of gamma-ray angular distribution measurements establish spin values of 3/2 + , 5/2 + , 3/2 + , 3/2 + and 1/2 + for the 1126.9, 1292.6, 1348, 1608.4 and 1785 keV levels respectively. The reduced E2 and M1 transition probabilities were determined for the 1126.9, 1292.6, 1348, 1493, 1608.4 and 1785 keV levels. The results were compared with the available theoretical calculations.
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