The Ratio R{sub dp} of the quasielastic nd {yields} p(nn) to the elastic np {yields} pn charge-exchange-process yields at the proton emitting angle {theta}{sub p,lab} = 0 deg. over 0.55-2.0 GeV neutron-beam energy region. Comparison of the results with the model-dependent calculations

Journal Article · Mon Jun 15 00:00:00 EDT 2009 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778809060143· OSTI ID:21405897

Morozov, A A; Shindin, R A; Chernykh, E V; Nomofilov, A A; Strunov, L N ^[1]

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1. Joint Institute for Nuclear Research (Russian Federation)

Our new experimental results (see, e.g., Preprint JINR no. E1-2008-61 (Dubna, 2008)) on ratio R{sub dp} of the quasielastic charge-exchange yield at the proton emitting angle {theta}{sub p,lab} = 0 deg. for the nd {yields} p(nn) reaction to the elastic np {yields} pn charge-exchange yield were presented. The measurements were carried out at the Nuclotron of the Veksler and Baldin Laboratory of High Energies of the JINR (Dubna) at the neutron-beam kinetic energies of 0.55, 0.8, 1.0, 1.2, 1.4, 1.8, and 2.0 GeV. In this paper the comparison of the experimental R{sub dp} data with the obtained R{sub dp} calculations within the impulse approximation by using the invariant-amplitude sets from the GW/VPI phase-shift analysis is made. The R{sub dp} values calculated using the set of invariant amplitude data for the elastic np {yields} pn charge exchange at {theta}{sub p,CM} = 0 deg., agree with the experimental data. This confirmed the nd {yields} p(nn) process yield at {theta}{sub p,CM} = 0 deg. is caused by the contribution of the spin-dependent part of the elastic np {yields} pn charge-exchange reaction. Thus, it has been shown that the obtained experimental R{sub dp} results can be used for the Delta-Sigma experimental program to reduce the total ambiguity in the extraction of the amplitude real parts.

• OSTI ID: 21405897
• Journal Information: Physics of Atomic Nuclei, Vol. 72, Issue 6; Other Information: DOI: 10.1134/S1063778809060143; Copyright (c) 2009 Pleiades Publishing, Ltd.; ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
CHARGE EXCHANGE
CHARGE-EXCHANGE REACTIONS
COMPARATIVE EVALUATIONS
ELASTIC SCATTERING
EXPERIMENTAL DATA
GEV RANGE
IMPULSE APPROXIMATION
JINR
KINETIC ENERGY
NEUTRON BEAMS
PHASE SHIFT
PROTONS
QUASI-ELASTIC SCATTERING
SPIN
YIELDS
ANGULAR MOMENTUM
APPROXIMATIONS
BARYONS
BEAMS
CALCULATION METHODS
DATA
DIRECT REACTIONS
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
EVALUATION
FERMIONS
HADRONS
INFORMATION
INTERNATIONAL ORGANIZATIONS
NUCLEAR REACTIONS
NUCLEON BEAMS
NUCLEONS
NUMERICAL DATA
PARTICLE BEAMS
PARTICLE PROPERTIES
QUASI-FREE REACTIONS
SCATTERING