New modes of halo excitation in the {sup 6}He nucleus

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.55.R577· OSTI ID:488771

Danilin, B V; Rogde, T; Ershov, S N; Heiberg-Andersen, H; Vaagen, J S ^[1]; Danilin, B V ^[2]; Ershov, S N ^[3]; Vaagen, J S ^[4]; Thompson, I J ^[5]; Zhukov, M V ^[6]

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1. SENTEF, Department of Physics, University of Bergen, Allegt. 55, 5007 Bergen (Norway)
2. RRC The Kurchatov Institute, Kurchatov Sq. 1, 123182, Moscow (Russia)
3. JINR - Dubna, 141980 Dubna, Moscow region (Russia)
4. ECT European Centre for Theoretical Studies in Nuclear Physics and Related Areas, Trento (Italy)
5. Department of Physics, University of Surrey, Guildford GU2 5XH (United Kingdom)
6. Chalmers University of Technology and Goeteborg University, S-41296 Goeteborg (Sweden)

Predictions are made for the structure of a second 2{sup +} resonance, the soft dipole mode and unnatural parity modes in the {sup 6}He continuum. We use a structure model which describes the system as a three-body {alpha}+N+N cluster structure, giving the experimentally known properties of {sup 6}He and {sup 6}Li, and use the distorted-wave impulse approximation (DWIA) reaction theory appropriate for dilute matter. The presence of both resonant and nonresonant structures in the halo excitation continuum is shown to be manifest in charge-exchange reactions as well as inelastic scattering with single nucleons. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 488771
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 55; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHARGE-EXCHANGE REACTIONS
CLUSTER MODEL
DISTORTED WAVE THEORY
EXCITATION
HELIUM 6
IMPULSE APPROXIMATION
INELASTIC SCATTERING
LITHIUM 6
NUCLEAR STRUCTURE
PARITY
RESONANCE