β-decay study of neutron-rich bromine and krypton isotopes

被引：13

作者：

Miernik, K. ^{[1
,2
]}

Rykaczewski, K. P. ^{[1
]}

Grzywacz, R. ^{[1
,3
]}

Gross, C. J. ^{[1
]}

Stracener, D. W. ^{[1
]}

Batchelder, J. C. ^{[4
]}

Brewer, N. T. ^{[5
]}

Cartegni, L. ^{[3
]}

Fijalkowska, A. ^{[2
,3
]}

Hamilton, J. H. ^{[5
]}

Hwang, J. K. ^{[5
]}

Ilyushkin, S. V. ^{[6
]}

Jost, C. ^{[3
]}

Karny, M. ^{[2
,4
]}

Korgul, A. ^{[2
]}

Krolas, W. ^{[7
]}

Liu, S. H. ^{[4
]}

Madurga, M. ^{[3
]}

Mazzocchi, C. ^{[2
]}

Mendez, A. J., II ^{[1
]}

Miller, D. ^{[3
]}

Padgett, S. W.

Paulauskas, S. V. ^{[3
]}

Ramayya, A. V. ^{[5
]}

Surman, R. ^{[8
]}

Winger, J. A. ^{[6
]}

Wolinska-Cichocka, M. ^{[1
,4
,9
]}

Zganjar, E. F. ^{[10
]}

机构：

[1] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37830 USA

[2] Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland

[3] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[4] Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA

[5] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[6] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA

[7] Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland

[8] Union Coll, Dept Phys & Astron, Schenectady, NY 12308 USA

[9] Univ Warsaw, Heavy Ion Lab, PL-02093 Warsaw, Poland

[10] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

PHYSICAL REVIEW C | 2013年 / 88卷 / 01期

关键词：

HALF-LIVES; GROSS THEORY; NUCLEAR-DATA; FISSION; PARTICLE; SPECTRA;

D O I：

10.1103/PhysRevC.88.014309

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Short-lived neutron-rich nuclei including Br-93, Kr-93, and Kr-94 were produced in proton-induced fission of U-238 at the Holifield Radioactive Ion Beam Facility in Oak Ridge. Their beta decay was studied by means of a high resolution online mass separator and beta-gamma spectroscopy methods. The half life of T-1/2 = 152(8) ms and beta-delayed branching ratio of P-n = 53(-8)(+11)% measured for Br-93 differs from the previously reported values of T-1/2 = 102(10) ms and P-n = 68(7)%. At the same time the half life of Kr-94 T-1/2 = 227(14) ms and both the half-life of T-1/2 = 1.298(54) s and beta-delayed branching ratio of P-n = 1.9(-0.2)(+0.6)% of Kr-93 are in very good agreement with literature values. The decay properties of Br-93 include previously unreported gamma transitions following a delayed neutron emission.

引用

页数：9

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