Existence of proton halos near the drip line

M. V. Zhukov and I. J. Thompson
Phys. Rev. C 52, 3505 – Published 1 December 1995
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Abstract

The proton drip-line nucleus Ne17 is studied in a three-body model of O15 plus two protons. The Ne17 nucleus has a Borromean binding structure, and calculations show a rms matter radius of 2.77–2.81 fm, in agreement with experiment. The model gives a proton radius excess about 0.26–0.32 fm over the neutron radius, showing that a proton skin is present. The 73% probability of a valence proton being outside the rms core radius is sufficiently large, however, to indicate a halo. Predictions for the momentum distributions of O15 fragments are given, and these, if verified, would also suggest a two-proton halo structure for Ne17. This would be the first identification of a two-proton halo nucleus.

  • Received 20 April 1995

DOI:https://doi.org/10.1103/PhysRevC.52.3505

©1995 American Physical Society

Authors & Affiliations

M. V. Zhukov

  • Department of Physics, Chalmers University of Technology and Göteborg University, S-41296 Göteborg, Sweden

I. J. Thompson

  • Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556
  • Department of Physics, University of Surrey, Guildford GU2 5XH, United Kingdom

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Issue

Vol. 52, Iss. 6 — December 1995

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