Two-nucleon photon absorption on sup 3 He in the. Delta. (1232) region

Journal Article · Mon Aug 21 04:00:00 EDT 1989 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.63.856· OSTI ID:5595135

d'Hose, N; Audit, G; Bloch, A; de Botton, N; Jammes, L; Laget, J M; Martin, J; Mazzucato, E; Sasaki, A; Schuhl, C; others, and

Cross sections were determined in the {Delta}(1232) excitation region for the reactions {sup 3}H({gamma},{ital p}){ital pn} and {sup 2}H({gamma},{ital p}){ital n} at several photon energies and proton emission angles. Inclusive proton spectra were measured with a magnetic spectrometer, using quasimonochromatic {ital e}{sup +}-annihilation photons. The {sup 3}He data can be mainly accounted for by predictions assuming photon absorption by a pair of nucleons, except in the high-momentum part of the proton spectra. They clearly indicate the need for additional contributions, such as three-body absorption mechanisms.

• OSTI ID: 5595135
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 63:8; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

651220* -- Nuclear Properties & Reactions
A=1-5
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BASIC INTERACTIONS
CAPTURE
CROSS SECTIONS
DELTA BARYONS
DELTA-1232 BARYONS
DEUTERIUM TARGET
DIFFERENTIAL CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
HELIUM 3 TARGET
INTERACTIONS
MAGNETIC SPECTROMETERS
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 100-1000
N BARYONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEONS
PARTICLE PRODUCTION
PHOTONUCLEAR REACTIONS
PHOTOPRODUCTION
PROTON SPECTRA
SPECTRA
SPECTROMETERS
TARGETS