Search for a 11/2−→3/2+ M 4 transition in141Sm |
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Authors: | G. G. Kennedy J. Deslauriers S. C. Gujrathi S. K. Mark |
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Affiliation: | 1. Foster Radiation Laboratory, McGill University, Montreal, Canada
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Abstract: | The electromagnetic decay of the 11/2? 141m Sm is investigated. Internal conversion electron and X-ray-conversion electron coincidence measurements indicate that the state undergoesβ + and electron capture decay with 99.69% strength and the remaining 0.31% goes to a 174.2±0.3 keVM4 transition. TheK/L conversion electron intensity ratio for the transition is measured to be 1.7±0.4. The energy of the 11/2? is established at 175.8±0.3 keV above the 1/2+ ground state in141Sm. Systematics of theM4 transitions in theN=79 and 81 isotones are discussed. |
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