Antiproton-Proton Cross Sections at 1.0, 1.25, and 2.0 BeV

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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 ... continued below

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Pages: 51

Creation Information

Coombes, C. A. March 15, 1960.

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  • Lawrence Radiation Laboratory
    Publisher Info: California Univ., Berkeley. Lawrence Radiation Lab. (United States)
    Place of Publication: Berkeley, California

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Description

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)

Physical Description

Pages: 51

Source

  • Other Information: Orig. Receipt Date: 31-DEC-60

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  • Report No.: UCRL-8865
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/4137694 | External Link
  • Office of Scientific & Technical Information Report Number: 4137694
  • Archival Resource Key: ark:/67531/metadc871687

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • March 15, 1960

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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  • June 8, 2018, 6:36 p.m.

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Coombes, C. A. Antiproton-Proton Cross Sections at 1.0, 1.25, and 2.0 BeV, thesis or dissertation, March 15, 1960; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc871687/: accessed September 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.