PROTON-PROTON COLLISIONS AT 4.2 Bev

Journal Article · Thu Feb 15 04:00:00 EST 1962 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.125.1386· OSTI ID:4799160

Blue, M H; Lord, J J; Parks, J G; Tsao, C H

Interactions between 4.15-Bev protons and the free hydrogen nuclei in nuclear emulsion are examined. The total elastic cross section from 27 events was determined to be 11.0 plus or minus 2.6 mb. On the basis of 113 interactions, the total inelastic cross section was found to be 28.1 plus or minus 3.1 mb. The partial cross sections corresponding to inelastic collisions having two, four, six, and eight secondary particles were foundto be respectively 16.3 plus or minus 2.4, 11.5 plus or minus 1.8, 0.2 plus or minus 0.1, and 0.1 plus or minus 0.1 mb. While the total inelastic cross section varies slowly with energy, the partial inelastic cross sections were found to be strongly energy dependent. The observed angular distribution of elastically scattered protons in the center-of-mass system was sharply peaked in the forward and backward directions, in fair agreement with calculations based on a simple optical model applicable for energies bctween 2 and 10 Bev. Particles produced in inelastic collisions were identified as pions or protons by measurements of energy loss and multiple scattering. For those particles identified, center-of- mass system distributions of energy, angle, and transverse momentum are presented. (auth)

• Research Organization: Univ. of Washington, Seattle
• NSA Number: NSA-16-014013
• OSTI ID: 4799160
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 125; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
COLLISIONS
CROSS SECTIONS
ENERGY LOSSES
HYDROGEN
MEASURED VALUES
NUCLEAR EMULSIONS
PHYSICS
PIONS
PROTONS
SCATTERING