g-factor of the 4 1 + rotational state of160Dy |
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Authors: | I. Alfter E. Bodenstedt W. Knichel J. Schüth |
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Affiliation: | 1. Institut für Strahlen- und Kernphysik der Universit?t Bonn, Nussallee 14-16, D-53115, Bonn, Germany
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Abstract: | By use of Ge-detectors of the OSIRIS-collaboration [1] in connection with the 12 detector IPAC apparatus of our laboratory [2] a precise measurement of theg-factor of the 4 1 + rotational state of160Dy was performed. The directional correlations of the threeγ-γ cascades, 1003-197 keV, 1103-197 keV and 1115-197 keV, which are weakly populated in the decay of 72.3 d160Tb were observed simultaneously. The integral rotations in the static hyperfine field of DyTb at 4.2 K were measured. Theg-factorg(4 1 + )=+0.350(20) was derived. By comparison with the magnetic splitting of the 2 1 + rotational state observed in the same environment by a Mössbauer experiment [3] the ratio of the twog-factors was derived as g(4 1 + )/g(2 1 + )=+ 0.91(5). For the high energy lines we derived from the measured directional correlations the E1/M2 mixing parameters: δ(1003 keV)=+0.005(4); δ(1103 keV)=?0.020(22), and δ(1115 keV)=+0.010(4) |
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