Neutron removal and cluster breakup of B14 and Be14

N. I. Ashwood, M. Freer, J. C. Angélique, V. Bouchat, W. N. Catford, N. M. Clarke, N. Curtis, O. Dorvaux, F. Hanappe, Y. Kerckx, M. Labiche, J. L. Lecouey, F. M. Marqués, T. Materna, A. Ninane, G. Normand, N. A. Orr, S. Pain, N. Soić, L. Stuttgé, C. Timis, A. Unshakova, and V. A. Ziman
Phys. Rev. C 70, 024608 – Published 31 August 2004

Abstract

Measurements of the neutron removal and cluster breakup cross sections for the neutron-rich nuclei Be14 and B14 have been performed at 34.4 and 40.8MeVnucleon, respectively. Enhancement of the first chance cluster breakup cross section for Be14 compared to that of B14 provides evidence for a well-developed He cluster structure of the ground state of Be14. Measurements of both the cross sections and decay-particle velocities suggest that multistep processes play an important role in the excitation and decay of both B14 and Be14.

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  • Received 18 December 2004

DOI:https://doi.org/10.1103/PhysRevC.70.024608

©2004 American Physical Society

Authors & Affiliations

N. I. Ashwood1, M. Freer1, J. C. Angélique2, V. Bouchat3, W. N. Catford4,2, N. M. Clarke1, N. Curtis1, O. Dorvaux5, F. Hanappe3, Y. Kerckx3, M. Labiche6, J. L. Lecouey2,*, F. M. Marqués2, T. Materna3, A. Ninane7, G. Normand2, N. A. Orr2, S. Pain4, N. Soić1,†, L. Stuttgé5, C. Timis2,‡, A. Unshakova8, and V. A. Ziman1

  • 1School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
  • 2Laboratoire de Physique Corpusculaire, ISMRA and Université de Caen, IN2P3-CNRS, 14050 Caen Cedex, France
  • 3Université Libre de Bruxelles, Code Postal 226, B-1050 Bruxelles, Belgium
  • 4School of Electronics and Physical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom
  • 5Institut de Recherches Subatomique, IN2P3-CNRS∕Université Louis Pasteur, Boite Postale 28, 67037 Strasbourg Cedex, France
  • 6Department of Electronic Engineering and Physics, University of Paisley, Paisley, PA1 2BE, United Kingdom
  • 7Institut de Physique, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
  • 8Joint Institute for Nuclear Research, 141980, Dubna, Moscow Region, Russia

  • *Present address: NSCL, Michigan State University, Michigan 48824, USA.
  • Present address: Rudjer Bošković Institute, Bijenička 54, HR-10000 Zagreb, Croatia.
  • Present address: School of Electronics and Physical Sciences, University of Survey, Surrey, GU2 7XH, UK.

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Vol. 70, Iss. 2 — August 2004

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