$\ensuremath{\beta}$-decay studies of the transitional nucleus $^{75}\mathrm{Cu}$ and the structure of $^{75}\mathrm{Zn}$

$β$ -decay studies of the transitional nucleus ${}^{75}{Cu}$ and the structure of ${}^{75}{Zn}$

S. V. Ilyushkin, J. A. Winger, K. P. Rykaczewski, C. J. Gross, J. C. Batchelder, L. Cartegni, I. G. Darby, R. Grzywacz, J. H. Hamilton, A. Korgul, W. Królas, S. N. Liddick, C. Mazzocchi, T. Mendez, S. Padgett, M. M. Rajabali, D. Shapira, D. W. Stracener, and E. F. Zganjar

Phys. Rev. C 83, 014322 – Published 31 January 2011

Abstract

The $β$ decay of ${}^{75}{Cu}$ [ $t_{1 / 2} = 1.222 (8)$ s] to levels in ${}^{75}{Zn}$ was studied at the Holifield Radioactive Ion Beam Facility of Oak Ridge National Laboratory. The $γ γ$ and $β γ$ data were collected at the Low-energy Radioactive Ion Beam Spectroscopy Station using the high-resolution isobar separator to obtain a purified ${}^{75}{Cu}$ beam with a rate of over 2000 ions per second. The excited states in ${}^{75}{Zn}$ have been identified for the first time. A total of 120 $γ$ -ray transitions were placed in a level scheme containing 59 levels including two states above the neutron separation energy and a previously unknown $1 / 2^{-}$ isomeric state at 127 keV. Spins and parities of several states were deduced and interpreted based on the observed $β$ feeding and $γ$ -decay pattern.

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Received 16 November 2010

DOI:https://doi.org/10.1103/PhysRevC.83.014322

Authors & Affiliations

S. V. Ilyushkin^1,*, J. A. Winger¹, K. P. Rykaczewski², C. J. Gross², J. C. Batchelder³, L. Cartegni⁴, I. G. Darby^4,5, R. Grzywacz^2,4, J. H. Hamilton⁶, A. Korgul^4,6,7,8, W. Królas^8,9, S. N. Liddick^4,10, C. Mazzocchi^4,7,11, T. Mendez², S. Padgett⁴, M. M. Rajabali^4,5, D. Shapira², D. W. Stracener², and E. F. Zganjar¹²

¹Department of Physics and Astronomy, Mississippi State University, Mississippi State, Mississippi 39762, USA
²Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
³UNIRIB, Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831, USA
⁴Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
⁵Instituut voor Kern-en Stralingsfysica, Katholieke Universiteit Leuven, Leuven B-3001, Belgium
⁶Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA
⁷Faculty of Physics, University of Warsaw, Warsaw PL 00-681, Poland
⁸Joint Institute for Heavy-Ion Reactions, Oak Ridge, Tennessee 37831, USA
⁹Institute of Nuclear Physics, Polish Academy of Sciences, Kraków PL 31-342, Poland
¹⁰National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
¹¹Università degli Studi di Milano and INFN, Sez. Milano, Milan I-20133, Italy
¹²Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA

^*svi1@msstate.edu

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Vol. 83, Iss. 1 — January 2011

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Physical Review C

covering nuclear physics

$β$ -decay studies of the transitional nucleus ${}^{75}{Cu}$ and the structure of ${}^{75}{Zn}$

S. V. Ilyushkin, J. A. Winger, K. P. Rykaczewski, C. J. Gross, J. C. Batchelder, L. Cartegni, I. G. Darby, R. Grzywacz, J. H. Hamilton, A. Korgul, W. Królas, S. N. Liddick, C. Mazzocchi, T. Mendez, S. Padgett, M. M. Rajabali, D. Shapira, D. W. Stracener, and E. F. Zganjar

Phys. Rev. C 83, 014322 – Published 31 January 2011

Abstract

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Physical Review C

covering nuclear physics

β-decay studies of the transitional nucleus Cu75 and the structure of Zn75

S. V. Ilyushkin, J. A. Winger, K. P. Rykaczewski, C. J. Gross, J. C. Batchelder, L. Cartegni, I. G. Darby, R. Grzywacz, J. H. Hamilton, A. Korgul, W. Królas, S. N. Liddick, C. Mazzocchi, T. Mendez, S. Padgett, M. M. Rajabali, D. Shapira, D. W. Stracener, and E. F. Zganjar

Phys. Rev. C 83, 014322 – Published 31 January 2011

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$β$ -decay studies of the transitional nucleus ${}^{75}{Cu}$ and the structure of ${}^{75}{Zn}$