Three-body decay of many-body resonances

Journal Article · Fri Oct 14 00:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2114705· OSTI ID:20719427

Jensen, A S; Fedorov, D V; Fynbo, H O.U. ^[1]; Garrido, E ^[2]

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1. Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C (Denmark)
2. Instituto de Estructura de la Materia, CSIC, Serrano 123, E-28006 Madrid (Spain)

We use the hyperspherical coordinates to describe decay of many-body resonances. Direct and sequential decay are described by different paths in the distances between the particles. We generalize the WKB expression for the {alpha}-decay width to decay of three charged particles. Decay mechanisms and resonance structures are computed in coordinate space. The energy distributions of the particles after decay are discussed. Moderate s-wave scattering lengths prefer decay via corresponding virtual state possibly leaving unique fingerprints of this reminiscence of the Efimov effect in the decay of excited states. Numerical illustrations are resonances in 6He, 12C, 17Ne.

• OSTI ID: 20719427
• Journal Information: AIP Conference Proceedings, Vol. 791, Issue 1; Conference: 2. Argonne/MSU/JINA/INT RIA workshop on reaction mechanisms for rare isotope beams, East Lansing, MI (United States), 9-12 Mar 2005; Other Information: DOI: 10.1063/1.2114705; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
CARBON 12
CHARGED PARTICLES
COORDINATES
EFIMOV EFFECT
ENERGY SPECTRA
EXCITED STATES
HELIUM 6
NEON 17
NUCLEAR REACTIONS
RESONANCE
S WAVES
SCATTERING LENGTHS
THREE-BODY PROBLEM
VIRTUAL STATES