Measurement of the A sub y y tensor analyzing power for the sup 1 H( rvec d , pp ) n reaction in the symmetric constant relative energy geometry

Journal Article · Sun Dec 01 04:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.44.2276· OSTI ID:5079938

Low, D A; Stephenson, E J; Olmer, C; Opper, A K; Park, B K; Schwandt, P; Wissink, S W ^[1]

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1. Indiana University Cyclotron Facility, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408 (United States)

Measurements of the unpolarized triple differential cross section and the {ital A}{sub {ital y}{ital y}} tensor analyzing power for the {sup 1}H({ital d},{ital pp}){ital n} reaction were made using a 94.5 MeV polarized deuteron beam at the Indiana University Cyclotron Facility. Scattering angles ({theta} and {phi}) and energy information were recorded for the two emerging protons using large-area wire chambers backed by stopping plastic scintillator detectors. Events were selected that were close to the symmetric constant relative energy geometry in order to enhance the sensitivity of the observables to off-shell and three-body effects. The measurements covered values of {alpha}, the center-of-mass angle between the incoming proton and the outgoing neutron, from 72{degree} to 180{degree}. Comparisons are made to Faddeev calculations that use either separable potentials or an exact treatment of the {ital S}-wave nucleon-nucleon interaction in conjunction with a perturbative treatment of higher partial waves. While none of these calculations, which use only two-nucleon interactions, is completely satisfactory, there remains too much variation among different theoretical treatments to demonstrate the need for including additional dynamical features in the three-body model.

• OSTI ID: 5079938
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 44:6; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

663430* -- Nucleon-Induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANALYZING POWER
BARYON-BARYON INTERACTIONS
BEAMS
BREAKUP REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DEUTERON REACTIONS
DIFFERENTIAL CROSS SECTIONS
ENERGY RANGE
EQUATIONS
FADDEEV EQUATIONS
HADRON-HADRON INTERACTIONS
HYDROGEN 1 TARGET
INTERACTIONS
MANY-BODY PROBLEM
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
POLARIZED BEAMS
TARGETS
THREE-BODY PROBLEM