Beta-decay study of neutron rich isotopes of Bromine and Krypton

Beta-decay study of neutron rich isotopes of Bromine and Krypton

Short lived neutron rich nuclei including 93 Br, 93 Kr and 94 Kr were produced in proton induced fission of 238 U at the HRIBF in Oak Ridge. Their beta decay was studied by means of a high resolution on line mass separator and beta gamma spectroscopy methods. The half life of 93Br T1/2 = 152(8) ms a...

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Veröffentlicht in:Physical review. C, Nuclear physics Nuclear physics, 2013-01, Vol.88 (1)
Hauptverfasser: Miernik, Krzysztof A, Gross, Carl J, Grzywacz, Robert Kazimierz, Madurga, M, Mendez, II, Anthony J, Miller, D., Padgett, S, Paulauskas, Stanley V, Rykaczewski, Krzysztof Piotr, Stracener, Daniel W, Wolinska-Cichocka, Marzena, Zganjar, E. F., Batchelder, J. C., Brewer, N.T., Cartegni, L., Fijalkowska, Aleksandra G, Hamilton, J. H., Hwang, J. K., Ilyushkin, S., Jost, Carola U, Karny, M., Korgul, A., Krolas, W., Liu, S.H., Mazzocchi, C., Ramayya, A. V., Surman, Rebecca, Winger, J. A., Wolinska-Cichocka, M
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Sprache:eng
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Zusammenfassung:Short lived neutron rich nuclei including 93 Br, 93 Kr and 94 Kr were produced in proton induced fission of 238 U at the HRIBF in Oak Ridge. Their beta decay was studied by means of a high resolution on line mass separator and beta gamma spectroscopy methods. The half life of 93Br T1/2 = 152(8) ms and delayed branching ratio of Pn = 53-8+11 may be compared to the previously reported values of T1/2 = 102(10) ms and Pn = 68(7)%. At the same time the half life of 94Kr T1/2 = 227(14) ms and B delayed branching ratio of Pn = 1.9+0.6 0.2 % of 93Kr are in very good agreement with literature values. The decay properties of 93Br include four new gamma transitions following beta delayed neutron emission.
ISSN:0556-2813
1089-490X
DOI:10.1103/PhysRevC.88.014309