Multipole mixing ratios of transitions in168Er
Time-integral and time-differential γ-γ directional correlation measurements were performed for cascades in168Er populated from the electron-capture decay of168Tm(87d). The168Tm source was dissolved in HF acid to minimize extranuclear perturbations. The results of the time-differential experiment fo...
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1975
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03402193_v274_n4_p359_Behar http://hdl.handle.net/20.500.12110/paper_03402193_v274_n4_p359_Behar |
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| Sumario: | Time-integral and time-differential γ-γ directional correlation measurements were performed for cascades in168Er populated from the electron-capture decay of168Tm(87d). The168Tm source was dissolved in HF acid to minimize extranuclear perturbations. The results of the time-differential experiment for the 448-99.3 keV and 448-198 keV cascades showed agreement with time dependent interaction and gave λ2(1094)=(0.79±0.09) ×107 sec-1. The attenuation factors for the 80 keV level were determined as G22 (80)=0.90±0.01 and G44(80)=0.94±0.01. Only I=4 spin value for the 1094 keV level is consistent with our measurements. The 632, 731, 741, and 816 keV transitions connecting the K=2+ and K = 0+ rotational bands were found to be of almost pure E2 character. The 99.3, 198, 547, 720, 830, and 1277 keV transitions are of practically pure E1 multipolarity. The 448 keV Ml transition has (0.8-0.4 +2.0)%E2 admixture. The results for the 1014-80keV cascade give (23±4)%E3 component in the 1014 keV transition. © 1975 Springer-Verlag. |
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