PROGRESS IN TRAP ASSISTED beta DECAY SPECTROSCOPY OF Ru-115

J. Kurpeta,J. Rissanen,V. -V. Elomaa,T. Eronen,J. Hakala,A. Jokinen,P. Karvonen,I. D. Moore,H. Penttila,A. Plochocki,S. Rahaman,S. Rinta-Antila,J. Ronkainen,A. Saastamoinen,T. Sonoda,J. Szerypo,W. Urban,Ch. Weber,J. Aysto

ACTA PHYSICA POLONICA B（2010）

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Abstract

The use, of ion trap purified rare isotope beam in combination with coincidence beta and gamma spectroscopy is presented. Its exemplified with the beta decay of a very neutron-rich isotope Ru-115. Thanks to a considerable increase of yield from the JYFLTRAP ion trap system beta decay of Ru-115 was reinvestigated. In consequence new gamma transitions and excited levels fed by beta decay were established in Rh-115. Results of half-life measurements are also presented. The very exotic nuclei of interest were produced in proton induced fission of U-238 target, separated with the IGISOL mass separator and purified to monoisotopic level with a Penning trap.

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