Two-neutron knockout from neutron-deficient $^{34}\mathrm{Ar}$, $^{30}\mathrm{S}$, and $^{26}\mathrm{Si}$

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Two-neutron knockout from neutron-deficient ${}^{34}{Ar}$ , ${}^{30}S$ , and ${}^{26}{Si}$

K. Yoneda, A. Obertelli, A. Gade, D. Bazin, B. A. Brown, C. M. Campbell, J. M. Cook, P. D. Cottle, A. D. Davies, D.-C. Dinca, T. Glasmacher, P. G. Hansen, T. Hoagland, K. W. Kemper, J.-L. Lecouey, W. F. Mueller, R. R. Reynolds, B. T. Roeder, J. R. Terry, J. A. Tostevin, and H. Zwahlen

Phys. Rev. C 74, 021303(R) – Published 23 August 2006

Abstract

Two-neutron knockout reactions from nuclei in the proximity of the proton dripline have been studied using intermediate-energy beams of neutron-deficient ${}^{34}{Ar}$ , ${}^{30}S$ , and ${}^{26}{Si}$ . The inclusive cross sections, and also the partial cross sections for the population of individual bound final states of the ${}^{32}{Ar}$ , ${}^{28}S$ and ${}^{24}{Si}$ knockout residues, have been determined using the combination of particle and γ-ray spectroscopy. Similar to the two-proton knockout mechanism on the neutron-rich side of the nuclear chart, these two-neutron removal reactions from already neutron-deficient nuclei are also shown to be consistent with a direct reaction mechanism.

Received 19 March 2006

DOI:https://doi.org/10.1103/PhysRevC.74.021303

Authors & Affiliations

K. Yoneda^1,*, A. Obertelli¹, A. Gade^1,2, D. Bazin¹, B. A. Brown^1,2, C. M. Campbell^1,2, J. M. Cook^1,2, P. D. Cottle³, A. D. Davies^1,2, D.-C. Dinca^1,2,†, T. Glasmacher^1,2, P. G. Hansen^1,2, T. Hoagland¹, K. W. Kemper³, J.-L. Lecouey^1,‡, W. F. Mueller¹, R. R. Reynolds³, B. T. Roeder³, J. R. Terry^1,2, J. A. Tostevin⁴, and H. Zwahlen^1,2

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
³Physics Department, Florida State University, Tallahassee, Florida 32306, USA
⁴Department of Physics, School of Electronics and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom

^*Present address: RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
^†Present address: American Science & Engineering, Inc., 829 Middlesex Turnpike, Billerica, MA 01821, USA.
^‡Present address: Laboratoire de Physique Corpusculaire, 6 Boulevard du maréchal Juin, 14050 Caen Cedex, France.

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Vol. 74, Iss. 2 — August 2006

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Physical Review C

covering nuclear physics

Two-neutron knockout from neutron-deficient ${}^{34}{Ar}$ , ${}^{30}S$ , and ${}^{26}{Si}$

K. Yoneda, A. Obertelli, A. Gade, D. Bazin, B. A. Brown, C. M. Campbell, J. M. Cook, P. D. Cottle, A. D. Davies, D.-C. Dinca, T. Glasmacher, P. G. Hansen, T. Hoagland, K. W. Kemper, J.-L. Lecouey, W. F. Mueller, R. R. Reynolds, B. T. Roeder, J. R. Terry, J. A. Tostevin, and H. Zwahlen

Phys. Rev. C 74, 021303(R) – Published 23 August 2006

Abstract

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Physical Review C

covering nuclear physics

Two-neutron knockout from neutron-deficient Ar34, S30, and Si26

K. Yoneda, A. Obertelli, A. Gade, D. Bazin, B. A. Brown, C. M. Campbell, J. M. Cook, P. D. Cottle, A. D. Davies, D.-C. Dinca, T. Glasmacher, P. G. Hansen, T. Hoagland, K. W. Kemper, J.-L. Lecouey, W. F. Mueller, R. R. Reynolds, B. T. Roeder, J. R. Terry, J. A. Tostevin, and H. Zwahlen

Phys. Rev. C 74, 021303(R) – Published 23 August 2006

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Two-neutron knockout from neutron-deficient ${}^{34}{Ar}$ , ${}^{30}S$ , and ${}^{26}{Si}$