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Phys. Rev. C 69, 024609 (2004) [10 pages]

Three-body continuum spatial correlations in Borromean halo nuclei

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B. V. Danilin
The Kurchatov Institute, 123182 Moscow, Russia

T. Rogde and J. S. Vaagen
SENTEF, Institute of Physics, University of Bergen, Norway

I. J. Thompson
Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom

M. V. Zhukov
Department of Physics, Göteborg University and Chalmers University of Technology, Göteborg, Sweden

[RNBT (Russian-Nordic-British Theory) Collaboration]

Received 20 June 2003; published 26 February 2004

Spatial correlations in the three-body continuum of Borromean (having no bound binary subsystems) three-body systems are discussed. The hyperspherical harmonics method is used to investigate low-lying resonances and the soft dipole mode in the two-neutron halo nucleus 6He, which has only the α+n+n continuum for excitation energies below 13 MeV. The spatial correlations reveal characteristic structures for true three-body resonances, a moderate amplification in the interior region for above-barrier resonances and long-range correlations in the cases of three-body 1− virtual and 0+ continuum states.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.69.024609
DOI:
10.1103/PhysRevC.69.024609
PACS:
25.60.Gc, 21.45.+v, 27.20.+n
 
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