Radiative Neutron Capture on Lithium-7

Abstract

The radiative neutron capture on lithium-7 is calculated model independently using a low energy halo effective field theory. The cross section is expressed in terms of scattering parameters directly related to the S-matrix element. The cross section depends on the poorly known p-wave effective range parameter r. This constitutes the leading order uncertainty in traditional model calculations. It is explicitly demonstrated by comparing with potential model calculations. A single parameter fit describes the low energy data extremely well and yields r = -1.47 fm^{-1}.

9 pages, 3 figures

References in corpus (19)

• A New Expansion for Nucleon-Nucleon Interactions
• Solar Fusion Cross Sections
• Nucleon-Nucleon Effective Field Theory Without Pions
• Effective Field Theory for Halo Nuclei: Shallow p-Wave States
• Sharpening the predictions of big-bang nucleosynthesis
• NNLO Corrections to Nucleon-Nucleon Scattering and Perturbative Pions
• Nucleon-Deuteron Scattering from an Effective Field Theory
• Narrow Resonances in Effective Field Theory
• Radiative capture of nucleons at astrophysical energies with single-particle states
• Precision Calculation of n+p->d+gamma Cross Section for Big-Bang Nucleosynthesis
• Coulomb Effects in Low Energy Proton-Proton Scattering
• Proton-Proton Scattering Lengths from Effective Field Theory
• Causality and the effective range expansion
• Asymptotic normalization coefficients for 8B->7Be+p from a study of 8Li->7Li+n
• Electromagnetic strength of neutron and proton single-particle halo nuclei
• Proton-Proton Fusion in Effective Field Theory
• Electromagnetic dissociation of 8B and the astrophysical S factor for 7Be(p,gamma)8B
• Effective-Range Corrections to the Proton-Proton Fusion Rate
• Electromagnetic properties of the Be-11 nucleus in Halo EFT

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• Coupled-channel effective field theory and proton-${}^7$Li scattering
• The 7Li(n,gamma)8Li Radiative Capture at Astrophysical Energies
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• Models, measurements, and effective field theory: proton capture on Beryllium-7 at next-to-leading order
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• Determining the 7Li(n,gamma) cross section via Coulomb dissociation of 8Li
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• Charge and Matter Form Factors of Two-Neutron Halo Nuclei in Halo Effective Field Theory at Next-to-leading-order
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• Effect of nuclear deformation on direct capture reactions
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