Abstract
The positron decay of146Eu was investigated, firstly to derive for the allowed transition to the 2046 keV state in146Sm the electron capture to positron decay ratio. The experimental valueEC/β +=43.7(42) is found to be in agreement within the respective error intervals with the ones calculated from the formalism of allowed decay using the recentQ-values of146Eu. Further on, theγ-decay properties of146Eu have been reinvestigated with emphasis on implied modifications of the hitherto accepted decay scheme: 42 new levels and 33 newγ-transitions were placed in the revised level scheme, 12 of the previously reported levels were deleted. The level distribution of146Sm is discussed within a statistical model. The indication for a non-statisticalβ-strength function is observed.
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This work has been funded by the German Federal Ministry for Research and Technology (BMFT) under the contract number 06G0456