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Title: ANTIPROTON-PROTON CROSS SECTIONS AT 1.0, 1.25, AND 2.0 BEV (thesis)

Abstract

The antiproton--proton interaction was studied at three energies, 2.0, 1.25, and 0.98 Bev. Antiprotons produced internally in the Revatron and channeled externally by a system of bending magnets and quadrupoles were selected from background particles by using a gas Cherenkov counter and scintillation counters. At the two lower energies, an electrostatic-magnetic velocity spectrometer was used to reject background particles. A liquidhydrogen target was completely surrounded by scintillation counters so that all charged secondaries from the antiproton--proion interactions could be detected. With the information obtained from these counters, the --p-bar--p total, elastic, inelastic, and charge-exchange cross sections and the angular distribution of the elastic scatterings were obtained at each energy. The total cross section was found to be 80, 89, and 100 mb at 2.0 1.25. and 0.98 Bev. respeclively. The inelastic cross section was about twothirds of ihe total cross section at each energy. It was found that each of the partial cross sections was dropping off slowly with energy. The results were fitted by an optic al-model c alculation. (auth)

Authors:
Publication Date:
Research Org.:
California. Univ., Berkeley. Lawrence Radiation Lab. (US)
Sponsoring Org.:
US Atomic Energy Commission (AEC)
OSTI Identifier:
4137694
Report Number(s):
UCRL-8865
NSA Number:
NSA-14-016177
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-60
Country of Publication:
United States
Language:
English
Subject:
PHYSICS; ANTIPROTONS; BACKGROUND; BEVATRON; CHERENKOV COUNTERS; CROSS SECTIONS; ELECTRIC CHARGES; ELECTROSTATICS; ENERGY; GEV RANGE; HYDROGEN; INTERACTIONS; LIQUIDS; MAGNETIC FIELDS; MAGNETS; PROTONS; SCINTILLATION COUNTERS; SPECTROMETERS; SYNCHROTRONS; TARGETS; VARIATIONS; VELOCITY

Citation Formats

Coombes, C A. ANTIPROTON-PROTON CROSS SECTIONS AT 1.0, 1.25, AND 2.0 BEV (thesis). United States: N. p., 1960. Web. doi:10.2172/4137694.
Coombes, C A. ANTIPROTON-PROTON CROSS SECTIONS AT 1.0, 1.25, AND 2.0 BEV (thesis). United States. doi:10.2172/4137694.
Coombes, C A. Tue . "ANTIPROTON-PROTON CROSS SECTIONS AT 1.0, 1.25, AND 2.0 BEV (thesis)". United States. doi:10.2172/4137694. https://www.osti.gov/servlets/purl/4137694.
@article{osti_4137694,
title = {ANTIPROTON-PROTON CROSS SECTIONS AT 1.0, 1.25, AND 2.0 BEV (thesis)},
author = {Coombes, C A},
abstractNote = {The antiproton--proton interaction was studied at three energies, 2.0, 1.25, and 0.98 Bev. Antiprotons produced internally in the Revatron and channeled externally by a system of bending magnets and quadrupoles were selected from background particles by using a gas Cherenkov counter and scintillation counters. At the two lower energies, an electrostatic-magnetic velocity spectrometer was used to reject background particles. A liquidhydrogen target was completely surrounded by scintillation counters so that all charged secondaries from the antiproton--proion interactions could be detected. With the information obtained from these counters, the --p-bar--p total, elastic, inelastic, and charge-exchange cross sections and the angular distribution of the elastic scatterings were obtained at each energy. The total cross section was found to be 80, 89, and 100 mb at 2.0 1.25. and 0.98 Bev. respeclively. The inelastic cross section was about twothirds of ihe total cross section at each energy. It was found that each of the partial cross sections was dropping off slowly with energy. The results were fitted by an optic al-model c alculation. (auth)},
doi = {10.2172/4137694},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1960},
month = {3}
}