Determination of low-energy parameters of neutron-proton scattering in the the shape-parameter approximation from present-day experimental data

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778810090048· OSTI ID:21426675

Babenko, V A; Petrov, N M ^[1]

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1. National Academy of Sciences of Ukraine, Bogolyubov Institute for Theoretical Physics (Ukraine)

On the basis of the total cross sections for neutron-proton scattering in the region of laboratory energies below 150 keV, the value of {sigma}{sub 0} = 20.4288(146) b was obtained for the total cross sections for neutron-proton scattering at zero energy. This value is in very good agreement with the experimental cross sections obtained by Houke and Hurst, but it is at odds with Dilg's experimental cross section. By using the value that we found for {sigma}{sub 0} and the experimental values of the neutron-proton coherent scattering length f, the deuteron binding energy {epsilon}{sub t}, the deuteron effective radius {rho}{sub t}(-{epsilon}{sub t}, -{epsilon}{sub t}), and the total cross section in the region of energies below 5 MeV, the following values were found in the shape-parameter approximation for the low-energy parameters of neutron-proton scattering in the spin-triplet and spin-singlet states: a{sub t} = 5.4114(27) fm, r{sub 0t} = 1.7606(35) fm, v{sub 2t} = 0.157 fm{sup 3}, a{sub s} = -23.7154(80) fm, r{sub 0s} = 2.706(67) fm, and v{sub 2s} = 0.491 fm{sup 3}.

• OSTI ID: 21426675
• Journal Information: Physics of Atomic Nuclei, Vol. 73, Issue 9; Other Information: DOI: 10.1134/S1063778810090048; Copyright (c) 2010 Pleiades Publishing, Ltd.; ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
APPROXIMATIONS
BINDING ENERGY
COHERENT SCATTERING
DEUTERONS
EXPERIMENTAL DATA
KEV RANGE
MEV RANGE
PROTON-NEUTRON INTERACTIONS
SCATTERING LENGTHS
SPIN
TOTAL CROSS SECTIONS
TRIPLETS
ANGULAR MOMENTUM
BARYON-BARYON INTERACTIONS
CALCULATION METHODS
CHARGED PARTICLES
CROSS SECTIONS
DATA
DIMENSIONS
ENERGY
ENERGY RANGE
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
LENGTH
MULTIPLETS
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PROTON-NUCLEON INTERACTIONS
SCATTERING