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164Ta,identification of a new isotope |
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| Authors: | U J Schrewe E Hagberg H Schmeing J C Hardy V T Koslowsky K S Sharma |
| Institution: | 1. Atomic Energy of Canada Limit Chalk River Nuclear Laboratories, Chalk River, Ontario, Canada 3. Queen's University, K7L 3N6, Kingston, Ontario, Canada 4. University of Toronto, M5S 1A7, Toronto, Ontario, Canada 5. University of Toronto, M5S 1A7, Toronto, Ontaria, Canada |
| Abstract: | The new isotope164Ta (T 1/2=13.6(2)s) was produced in the127I(40Ca, 3n) reaction and transported to a measuring station by helium jet. Decay properties were observed withα, γ, andγ-γ spectroscopy. TheZ assignment of the new isotope was based ongg-X-ray coincidence measurements. The mass assignment was deduced from measured excitation functions. The twoγ rays assigned to the new activity most likely originate from the 4+→2+→0+ decay sequence in164Hf. A smallα branch, ≦0.016(5)%, with anα decay energy ofE α=4,625(15) keV was found and assigned to the decay of164Ta. The deduced upper limit of theα width for this branch,W α≦0.6(2), is in accordance with those known for neighbouring nuclei. |
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