Two-neutron correlations in {sup 6}He in a Coulomb breakup reaction

Journal Article · Thu Apr 15 04:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.044308· OSTI ID:21388917

Kikuchi, Yuma; Kato, Kiyoshi; Myo, Takayuki; Takashina, Masaaki; Ikeda, Kiyomi ^[1]

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1. Division of Physics, Graduate School of Science, Hokkaido University, Sapporo 060-0810 (Japan)

We investigate the three-body Coulomb breakup of a two-neutron halo nucleus, {sup 6}He. Based on the alpha+n+n model, the three-body scattering states of {sup 6}He are described by using the combined methods of the complex scaling and the Lippmann-Schwinger equation. We calculate the breakup cross section, the two-dimensional energy distributions, and the invariant mass spectra for the E1 transition of {sup 6}He. We discuss the relations between the structures in these strengths and the n-n and alpha-n correlations of {sup 6}He. It is found that the {sup 5}He resonance in the final states contributes to make a low-energy enhancement of the strength. The n-n final-state interaction also contributes to enhance the strength globally. However, the ground-state correlations of {sup 6}He, such as a dineutron, are difficult to recognize in the strength because of the dominant effect of the final-state interaction.

• OSTI ID: 21388917
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 81; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY RADIOISOTOPES
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BREAKUP REACTIONS
CORRELATIONS
CROSS SECTIONS
E1-TRANSITIONS
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
FINAL-STATE INTERACTIONS
GROUND STATES
HADRONS
HELIUM 5
HELIUM 6
HELIUM ISOTOPES
INTEGRAL EQUATIONS
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
LIPPMANN-SCHWINGER EQUATION
MANY-BODY PROBLEM
MASS SPECTRA
MILLISECONDS LIVING RADIOISOTOPES
MULTIPOLE TRANSITIONS
NEUTRONS
NUCLEAR HALOS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
RADIOISOTOPES
RESONANCE
SCALING
SCATTERING
SIMULATION
SPECTRA
THREE-BODY PROBLEM
TWO-DIMENSIONAL CALCULATIONS