In-beam $\ensuremath{\gamma}$-ray spectroscopy of ${}^{43\ensuremath{-}46}$Cl

In-beam $γ$ -ray spectroscopy of $^{43 - 46}$ Cl

S. R. Stroberg, A. Gade, T. Baugher, D. Bazin, B. A. Brown, J. M. Cook, T. Glasmacher, G. F. Grinyer, S. McDaniel, A. Ratkiewicz, and D. Weisshaar

Phys. Rev. C 86, 024321 – Published 31 August 2012

Abstract

The low-energy nuclear structure of the neutron-rich $^{43 - 46}$ Cl isotopes is studied via in-beam $γ$ -ray spectroscopy following the fragmentation of $^{48}$ K projectiles on a $^{9}$ Be target at intermediate beam energies. $γ γ$ coincidence information was used to construct level schemes for these neutron-rich nuclei. For the $N = 28$ nucleus $^{45}$ Cl, the lifetime of the first excited state at 130 keV was extracted via $γ$ -ray line shape analysis, yielding an $M 1$ strength an order of magnitude greater than that predicted by theory. The experimental data is compared to the results of large-scale shell-model calculations with effective interactions in the $s d$ - $p f$ model space.

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Received 15 June 2012

DOI:https://doi.org/10.1103/PhysRevC.86.024321

Authors & Affiliations

S. R. Stroberg^1,2, A. Gade^1,2, T. Baugher^1,2, D. Bazin¹, B. A. Brown^1,2, J. M. Cook^1,2,*, T. Glasmacher^1,2, G. F. Grinyer^1,†, S. McDaniel^1,2, A. Ratkiewicz^1,2, and D. Weisshaar¹

¹National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
²Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA

^*Present address: Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
^†Present Address: Grand Accélérateur National d’Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Blvd Henri Becquerel, 14076 Caen, France.

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Vol. 86, Iss. 2 — August 2012

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Physical Review C

covering nuclear physics

In-beam $γ$ -ray spectroscopy of $^{43 - 46}$ Cl

S. R. Stroberg, A. Gade, T. Baugher, D. Bazin, B. A. Brown, J. M. Cook, T. Glasmacher, G. F. Grinyer, S. McDaniel, A. Ratkiewicz, and D. Weisshaar

Phys. Rev. C 86, 024321 – Published 31 August 2012

Abstract

Authors & Affiliations

Article Text (Subscription Required)

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Physical Review C

covering nuclear physics

In-beam γ-ray spectroscopy of 43−46Cl

S. R. Stroberg, A. Gade, T. Baugher, D. Bazin, B. A. Brown, J. M. Cook, T. Glasmacher, G. F. Grinyer, S. McDaniel, A. Ratkiewicz, and D. Weisshaar

Phys. Rev. C 86, 024321 – Published 31 August 2012

Abstract

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In-beam $γ$ -ray spectroscopy of $^{43 - 46}$ Cl