Abstract
The results of combined measurements of the directional distribution and the linear polarization of gamma-rays from oriented182TaFe are reported. Construction and calibration of a Compton polarimeter based on a single planar Ge(Li) detector are described. The degree of the linear polarization and multipole mixing ratios for many gamma-transitions in182W have been deduced. A triple multipole mixingE1+M2+E3 of the 1,274 keV transition has been obtained withδ1(M2/E1)=+0.36(10) andδ2(E3/E1)=−0.28(12). Results are discussed in the framework of the rotational model. Strong evidence of the octupole vibrational nature of the 1,289 keV level in182W has been found.
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