Precision Measurement of the n-3He Incoherent Scattering Length Using Neutron Interferometry

Abstract

We report the first measurement of the low-energy neutron-${}^3$He incoherent scattering length using neutron interferometry: $b_i^{\prime }=(-2.512\pm 0.012statistical\pm 0.014systematic)$ fm. This is in good agreement with a recent calculation using the AV18+3N potential. The neutron-${}^3$He scattering lengths are important for testing and developing nuclear potential models that include three nucleon forces, effective field theories for few-body nuclear systems, and neutron scattering measurements of quantum excitations in liquid helium. This work demonstrates the first use of a polarized nuclear target in a neutron interferometer.

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References in corpus (11)

• An accurate nucleon-nucleon potential with charge-independence breaking
• The high-precision, charge-dependent Bonn nucleon-nucleon potential (CD-Bonn)
• Construction of high-quality Nucleon-Nucleon potential models
• Quantum Monte Carlo calculations of nuclei with A \leq 7
• Effective Field Theory for Few-Nucleon Systems
• Quantum Monte Carlo Calculations of Light Nuclei
• Realistic models of pion-exchange three-nucleon interactions
• Quantum Monte Carlo calculations of $A=9,10$ nuclei
• Precision neutron interferometric measurements and updated evaluations of the n-p and n-d coherent neutron scattering lengths
• Precision neutron interferometric measurement of the nd coherent neutron scattering length and consequences for models of three-nucleon forces
• Microscopic calculation of the spin-dependent neutron scattering lengths on 3He

Cited by in corpus (11)

• Fundamental phenomena of quantum mechanics explored with neutron interferometers
• The parity-violating asymmetry in the 3He(n,p)3H reaction
• Diffraction of slow neutrons by holographic SiO_2 nanoparticle-polymer composite gratings
• Three-port beam splitter for slow neutrons using holographic nanoparticle-polymer composite diffraction gratings
• Decoupling of a Neutron Interferometer from Temperature Gradients
• Neutron interferometric measurement of the scattering length difference between the triplet and singlet states of n-${}^3$He
• Few nucleons scattering in pionless effective field theory
• Heavy-baryon chiral perturbation theory approach to thermal neutron capture on ${}^{3}He$
• Novel Concept for a Neutron Electric Charge Measurement using a Talbot-Lau Interferometer at a Pulsed Source
• The neutron electric dipole moment experiment at the Spallation Neutron Source
• Measurement of the total neutron scattering cross section ratios of noble gases of natural isotopic composition using a pulsed neutron beam