ISSN:
1434-601X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Time-integral and time-differentialγ-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 gaveλ 2(1094)=(0.79±0.09) ×107 sec−1. The attenuation factors for the 80 keV level were determined asG 22 (80)=0.90±0.01 and G44(80)=0.94±0.01. OnlyI=4 spin value for the 1094 keV level is consistent with our measurements. The 632, 731, 741, and 816 keV transitions connecting theK=2+ andK = 0+ rotational bands were found to be of almost pureE2 character. The 99.3, 198, 547, 720, 830, and 1277 keV transitions are of practically pureE1 multipolarity. The 448 keVMl 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01434048
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