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Phys. Rev. C 74, 021303(R) (2006) [5 pages]

Two-neutron knockout from neutron-deficient 34Ar, 30S, and 26Si

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K. Yoneda1,*, A. Obertelli1, A. Gade1,2, D. Bazin1, B. A. Brown1,2, C. M. Campbell1,2, J. M. Cook1,2, P. D. Cottle3, A. D. Davies1,2, D.-C. Dinca1,2,†, T. Glasmacher1,2, P. G. Hansen1,2, T. Hoagland1, K. W. Kemper3, J.-L. Lecouey1,‡, W. F. Mueller1, R. R. Reynolds3, B. T. Roeder3, J. R. Terry1,2, J. A. Tostevin4, and H. Zwahlen1,2
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

Received 19 March 2006; published 23 August 2006

Two-neutron knockout reactions from nuclei in the proximity of the proton dripline have been studied using intermediate-energy beams of neutron-deficient 34Ar, 30S, and 26Si. The inclusive cross sections, and also the partial cross sections for the population of individual bound final states of the 32Ar, 28S and 24Si 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.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.74.021303
DOI:
10.1103/PhysRevC.74.021303
PACS:
24.50.+g, 27.30.+t, 23.20.Lv, 21.60.Cs

*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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