Electron quasi-elastic scattering and. Delta. production from sup 3 H and sup 3 He

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6044046

Ueng, Tzongshyan

Electron quasi-elastic scattering and {Delta} production cross sections of {sup 3}H and {sup 3}He are presented for E{sub i} from 109 MeV to 789 MeV at {theta} = 54.0{degrees}, E{sub i} from 99 MeV to 507 MeV at {theta} = 134.5{degrees}. The longitudinal and the transverse response functions were obtained using Rosenbluth separation with {vert bar}{rvec q}{vert bar} from 150 MeV/c to 700 MeV/c. The results in the quasi-elastic scattering region are compared with the calculation using spectral function obtained from the 3-nucleon wave function calculated for the Reid soft core potential with the Fadeev technique. Discrepancies are seen between the experimental longitudinal response functions and the calculations. The transverse response functions agree, in general, with the calculations. The nucleon form factors modified by the nuclear medium, the nucleon-nucleon pair correlations, final state interactions, meson exchange effects and pion productions are considered as the contributions to the discrepancies. The Coulomb sum rules for both {sup 3}H and {sup 3}He are obtained with model independent approach. The Coulomb sums are shown saturated at 85% as {vert bar}{rvec q}{vert bar} > 350 MeV/c. {sup 3}He displays a larger nucleon-nucleon pair correlation than {sup 3}H. The phenomena of y-scaling are also studied with the total cross sections and the separated longitudinal and transverse cross sections in the quasi-elastic scattering region. In the {Delta} peak region, the cross sections of {sup 3}H and {sup 3}He are identical with experimental uncertainty, which indicates that the electro-{Delta} production mechanisms from proton and neutron in the nucleus are the same.

• Research Organization: Virginia Univ., Charlottesville, VA (USA)
• OSTI ID: 6044046
• 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
BOSON-EXCHANGE MODELS
CHARGED-PARTICLE REACTIONS
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DIRECT REACTIONS
ELECTROMAGNETIC INTERACTIONS
ELECTRON REACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
FERMIONS
FINAL-STATE INTERACTIONS
FORM FACTORS
FUNCTIONS
HADRONS
HELIUM 3 TARGET
INTERACTIONS
LEPTON REACTIONS
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PERIPHERAL MODELS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
RESPONSE FUNCTIONS
SCATTERING
SUM RULES
TARGETS
TRITIUM TARGET