$\ensuremath{\beta}$-$\ensuremath{\gamma}$ and $\ensuremath{\beta}$-delayed neutron-$\ensuremath{\gamma}$ decay of neutron-rich copper isotopes

$β$ - $γ$ and $β$ -delayed neutron- $γ$ decay of neutron-rich copper isotopes

A. Korgul, K. P. Rykaczewski, J. A. Winger, S. V. Ilyushkin, C. J. Gross, J. C. Batchelder, C. R. Bingham, I. N. Borzov, C. Goodin, R. Grzywacz, J. H. Hamilton, W. Królas, S. N. Liddick, C. Mazzocchi, C. Nelson, F. Nowacki, S. Padgett, A. Piechaczek, M. M. Rajabali, D. Shapira, K. Sieja, and E. F. Zganjar

Phys. Rev. C 86, 024307 – Published 10 August 2012

Abstract

The $β$ -decay properties of neutron-rich Cu isotopes produced in proton-induced fission of $^{238}$ U were studied at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory. The data were collected using high-resolution online mass separation, reacceleration, and digital $β − γ$ spectroscopy methods. An improved decay scheme of $N = 49$ $^{78}$ Cu and the first observation of $N = 50$ $^{79}$ Cu $β$ -delayed neutron decay followed by a gamma transition are reported. Spin and parity (5 $^{-}$ ) are deduced for $^{78 g s}$ Cu. The $β$ -delayed neutron branching ratios ( $P_{β n}$ ) for the $^{77}$ Cu and $^{79}$ Cu precursors are analyzed with the help of nuclear structure models.

Received 27 April 2012

DOI:https://doi.org/10.1103/PhysRevC.86.024307

Authors & Affiliations

A. Korgul^1,2, K. P. Rykaczewski³, J. A. Winger^2,4,5, S. V. Ilyushkin⁴, C. J. Gross³, J. C. Batchelder⁵, C. R. Bingham^3,6, I. N. Borzov^2,7, C. Goodin⁸, R. Grzywacz^3,6, J. H. Hamilton⁸, W. Królas^2,9, S. N. Liddick^6,10, C. Mazzocchi^1,2,6, C. Nelson⁸, F. Nowacki¹¹, S. Padgett⁶, A. Piechaczek¹², M. M. Rajabali⁶, D. Shapira³, K. Sieja^13,14, and E. F. Zganjar¹²

¹Faculty of Physics, University of Warsaw, PL 00-681 Warszawa, Poland
²Joint Institute for Heavy-Ion Research, Oak Ridge, Tennessee 37831, USA
³Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
⁴Department of Physics and Astronomy, Mississippi State University, Mississippi 39762, USA
⁵UNIRIB, Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831, USA
⁶Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
⁷Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia
⁸Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA
⁹Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
¹⁰National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
¹¹Institute Pluridisciplinaire Hubert Curien, Strasburg Cedex 2, France
¹²Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
¹³Université de Strasbourg, IPHC, Strasbourg, France
¹⁴CNRS, UMR7178, Strasbourg, France

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Vol. 86, Iss. 2 — August 2012

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Physical Review C

covering nuclear physics

$β$ - $γ$ and $β$ -delayed neutron- $γ$ decay of neutron-rich copper isotopes

Phys. Rev. C 86, 024307 – Published 10 August 2012

Abstract

Authors & Affiliations

Article Text (Subscription Required)

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Physical Review C

covering nuclear physics

β-γ and β-delayed neutron-γ decay of neutron-rich copper isotopes

Phys. Rev. C 86, 024307 – Published 10 August 2012

Abstract

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$β$ - $γ$ and $β$ -delayed neutron- $γ$ decay of neutron-rich copper isotopes