PROTON-PROTON COLLISIONS AT 3.5 Bev
Thesis/Dissertation
·
OSTI ID:4167822
Ilford G-5 emulsions were exposed to an external 3.5Bev proton beam of the Berkeley Bevatron. A total of 1200 nuclear interactions of beam protons was located, of which 128 were identified as proton-proton collisions. Multiple scattering, blob density, range, and angle measurements were employed to determine the cross sections for elastic and inelastic interactions, as well as the identities and center-of-mass-system momenta and scattering angles of secondaries from inelastic proton-proton interactions. This analysis indicates a cross section of 8.0 plus or minus 2.4 mb for elastic events, 24.1 plus or minus 2.9 mb for 2-prong inelastic events, 7.9 plus or minus 1.4 mb for 4- prong events, and 0.8 plus or minus 0.3 mb for 6-prong events. The mean charged pion multiplicity in inelastic interactions is 1.5 plus or minus 0.2 and corresponds to an average degree of inelasticity of 0.45 plus or minus 0.06. Center-ofmass-system angular distributions of charged secondaries from inelastic events display a peaking for small scattering angles, which is most pronounced for protons and pions from everts with low secondary multiplicity. Momentum and transverse momentum distributions of secondary protons and pions from inelastic events are presented and compared with the results at other energies. The angular distribution of elastically scattered protons is found to be in fair agreement with that predicted by a uniform optical mondel of radius 1.25 x 10/sup -13/ cm and opacity 0.88. The results of the experiment are also in reasonable agreement with the predictions of a statistical model that incorporates isobar production. Q values for all combinations of nucleonnucleon and pion-pion pairs were calculated and showed a dominance of Q values less than 50 Mev. Q values for events in which one of the tracks was a low energy proton showed some evidence of a resonance with Q values of 150 Mev and higher. (Dissertation Abstr.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-18-000908
- OSTI ID:
- 4167822
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
ABSORPTION
ANGULAR DISTRIBUTION
BETATRONS
BEVATRON
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ENERGY
ENERGY RANGE
GEV RANGE
ILFORD EMULSIONS
INTERACTIONS
ISOBARS
MASS
MOMENTUM
MULTIPLICITY
NUCLEAR EMULSIONS
NUCLEAR MODELS
NUCLEONS
NUMERICALS
OPTICAL MODEL
PARTICLE MODELS
PARTICLE TRACKS
PHYSICS
PROTON BEAMS
PROTONS
Q-VALUE
RESONANCE
SCATTERING
STATISTICS
SYNCHROTRONS
ANGULAR DISTRIBUTION
BETATRONS
BEVATRON
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ENERGY
ENERGY RANGE
GEV RANGE
ILFORD EMULSIONS
INTERACTIONS
ISOBARS
MASS
MOMENTUM
MULTIPLICITY
NUCLEAR EMULSIONS
NUCLEAR MODELS
NUCLEONS
NUMERICALS
OPTICAL MODEL
PARTICLE MODELS
PARTICLE TRACKS
PHYSICS
PROTON BEAMS
PROTONS
Q-VALUE
RESONANCE
SCATTERING
STATISTICS
SYNCHROTRONS