Neutron-proton bremsstrahlung studies using the white neutron source at the LAMPF/WNR

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6506089

Wender, S A; Nelson, R O; Schillaci, M E ^[1]; Blann, M ^[2]

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1. Los Alamos National Lab., NM (USA)
2. Lawrence Livermore National Lab., CA (USA)

Nucleon-nucleon bremsstrahlung is a few-body radiative process that provides insight into several areas of nuclear physics. It is one of the simplest systems for studying the off-shell behavior of the nucleon-nucleon potential. The physics involved in neutron-proton bremsstrahlung (NPB) is significantly different from that of proton-proton bremsstrahlung (PPB). In particular, NPB cross sections are much larger than PPB cross sections because NPB allows E1 radiation, and the contribution to the cross section from the meson exchange currents has been calculated to be as large as the contributions from external radiation. To date there have been essentially four NPB experiments. These measurements have covered only a small part of the available phase space. A major experimental problem in performing these measurements has been the lack of a suitable intense, high-energy neutron beam. We are planning a measurement of the NPB cross section using the white neutron source at the WNR target area at the LAMPF accelerator. We plant to implement the experiment in three phases. In this first state, we shall measure inclusive hard-photon production using a multi-element gamma-ray telescope that is insensitive to neutrons. In the second phase, we shall measure the bremsstrahlung gamma-rays in coincidence with recoil protons. In the last phase, we shall detect the scattered neutrons in coincidence with the recoil protons and gamma rays. 8 refs., 6 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• Sponsoring Organization: DOE/AD
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6506089
• Report Number(s): LA-UR-90-3419; CONF-901057--11; ON: DE91002378
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
651000 -- Nuclear Physics
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ANGULAR DISTRIBUTION
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BREMSSTRAHLUNG
CHARGED-PARTICLE REACTIONS
CHERENKOV COUNTERS
CROSS SECTIONS
DATA
DETECTION
DISTRIBUTION
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
GAMMA DETECTION
HADRON-HADRON INTERACTIONS
HEAVY ION REACTIONS
INFORMATION
INTERACTIONS
LAMPF LINAC
LEPTONS
LINEAR ACCELERATORS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
MESON FACTORIES
NEUTRINOS
NEUTRON SOURCES
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE SOURCES
PHOTOPRODUCTION
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
RADIATION DETECTION
RADIATION DETECTORS
RADIATION SOURCES
RADIATIONS
SCATTERING