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

Journal Article · Tue Jan 01 00:00:00 EST 2013 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.88.014309· OSTI ID:1089782

Miernik, Krzysztof A ^[1]; Gross, Carl J ^[1]; Grzywacz, Robert Kazimierz ^[1]; Madurga, M ^[2]; Miller, D. ^[2]; Padgett, S ^[2]; Paulauskas, Stanley V ^[1]; Rykaczewski, Krzysztof Piotr ^[1]; Stracener, Daniel W ^[1]; Wolinska-Cichocka, Marzena ^[1]; Zganjar, E. F. ^[3]; Batchelder, J. C. ^[4]; Brewer, N. T. ^[5]; Cartegni, L. ^[2]; Fijalkowska, Aleksandra G ^[1]; Hamilton, J. H. ^[5]; Hwang, J. K. ^[5]; Ilyushkin, S. ^[6]; Jost, Carola U ^[1]; Karny, M. ^[7] ; Korgul, A. ^[7]; Krolas, W. ^[4]; Liu, S. H. ^[8]; Mazzocchi, C. ^[7]; Ramayya, A. V. ^[5]; Surman, Rebecca ^[9]; Winger, J. A. ^[6]; Wolinska-Cichocka, M ^[4]

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1. ORNL
2. University of Tennessee, Knoxville (UTK)
3. Louisiana State University
4. Oak Ridge Associated Universities (ORAU)
5. Vanderbilt University
6. Mississippi State University (MSU)
7. University of Warsaw
8. UNIRIB/ORAU and Vanderbilt University, Nashville, Tennessee
9. Union College

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.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Holifield Radioactive Ion Beam Facility (HRIBF)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1089782
• Journal Information: Physical Review C, Vol. 88, Issue 1; ISSN 0556--2813
• Country of Publication: United States
• Language: English