Relativistic effects in proton-proton bremsstrahlung

Journal Article · Tue Dec 01 04:00:00 EST 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.46.2199· OSTI ID:6948788

Herrmann, V ^[1]; Nakayama, K ^[2]

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1. Institut fuer Kernphysik, Forschungszentrum Juelich, W-5170 Juelich (Germany)
2. Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602 (United States) Institut fuer Kernphysik, Forschungszentrum Juelich, W-5170 Juelich (Germany)

The {ital pp}{gamma} reaction at intermediate energies is investigated using a modern relativistic meson-exchange potential model. Both the single-scattering and rescattering terms are treated including relativistic corrections. It is shown that for energetic photons in the region near the end-point energy the relativistic spin correction is very large and reduces the {ital pp}{gamma} cross section by a factor of {similar to}2. This large correction is dynamical in origin and can be traced in a very simple way to the strong energy dependence of the {sup 1}{ital S}{sub 0} state contribution. It is also shown that, under these kinematical conditions, the rescattering term {ital reduces} the cross section, which amplifies the relativistic effects on the {ital pp}{gamma} reaction. For the kinematical conditions of the recent TRIUMF experiment at {ital T}{sub lab}=280 MeV the rescattering contribution {ital enhances} the cross section and reduces the discrepancy between the data and the calculation.

• OSTI ID: 6948788
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 46:6; 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
AMPLITUDES
ANGULAR MOMENTUM
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOSON-EXCHANGE MODELS
BREMSSTRAHLUNG
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ENERGY RANGE
GAMMA SPECTRA
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HYDROGEN 1 TARGET
INELASTIC SCATTERING
INTERACTIONS
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PERIPHERAL MODELS
PHOTOPRODUCTION
PROTON REACTIONS
RADIATIONS
SCATTERING
SPECTRA
SPIN
TARGETS
TRANSITION AMPLITUDES