Multipole mixing ratios of transitions in156Gd
- 5 May 1975
- journal article
- Published by IOP Publishing in Journal of Physics G: Nuclear Physics
- Vol. 1 (4) , 476-486
- https://doi.org/10.1088/0305-4616/1/4/013
Abstract
Using gamma - gamma ( theta ), and eK- gamma ( theta ) directional correlation and gamma ( theta ) (nuclear orientation) techniques the multipole character of twenty one transitions occurring in 156Gd following the decay of 156Tb have been determined. The observed mixing ratios show that the transitions de-exciting the gamma band and the 5+ and 4+ rotational levels are predominantly E2, and that the gamma rays originating from the 3- and 4- rotation levels are predominantly E1. The 4+rot-6+gr,4+rot-2+gr, 4+rot-2+gamma transitions de-exciting the 1510.7 keV (K=4) level are shown to have M3 admixtures. The signs and magnitudes of the multipole ratios of the 28-2gr, multiple mixing ratios of the 2gamma -2gr, 3gamma -2gr, 3gamma -4gr, and 4gamma -4gr transitions are consistent with the tabulated values of the other even-even nuclei in this region.Keywords
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