MEASUREMENT OF ELECTRON ATTACHMENT IN OXYGEN-METHANE AND OXYGEN-CARBON DIOXIDE MIXTURES Metadata

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Title

  • Main Title MEASUREMENT OF ELECTRON ATTACHMENT IN OXYGEN-METHANE AND OXYGEN-CARBON DIOXIDE MIXTURES

Creator

  • Author: O'Kelly, L. B.
    Creator Type: Personal
  • Author: Hurst, G. S.
    Creator Type: Personal
  • Author: Bortner, T. E.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Oak Ridge National Laboratory
    Place of Publication: Tennessee

Date

  • Creation: 1960-01-25

Language

  • English

Description

  • Content Description: The formation of heavy negative ions by the attachment of low-energy electrons to oxygen molecules was studied for small amounts of oxygen mixed with methane or carbon dioxide. The rate of attachment in both cases was found to depend on the electron energy, the pressure of the oxygen and the non-attaching gas, and on the kind of non-attaching gas. In general, the attachment increases as electron enprgy decreases or as either oxygen or total pressure increases. The value of the attachment coefficient in oxygencarbon dioxide mixtures is about 100 times its value in oxygen-methane mixtures. This large difference is probably due in part to differences in electron energy and partly to differences in the stabilizing qualities of the two molecules. Dissociative attachment, which should be pressure independent, does not occur at the low energies that were used in this work. Both methane and carbon dioxide are to differences in the stabilizing qualities of the two molecules. Dissociative attachment, which should be pressure independent, does not occur at the low energies that were used in this work. Both methane and carbon dioxide are sometimes used as filling gases for Geiger and proportional counters. The high sensitivity of carbon dioxide to oxygen contamination indicates that very pure gas should be used if the best operation is to be obtained. The low sensitivity of methane recommends it for counters where careful purification of the gas is difficult and particularly for flow counters where the possibility of contamination by atmospheric oxygen exists. (auth)
  • Physical Description: Pages: 75

Subject

  • Keyword: Energy Range
  • Keyword: Electron Attachment
  • Keyword: Geiger-Mueller Counters
  • Keyword: Impurities
  • Keyword: Pressure
  • Keyword: Ionization
  • Keyword: Cleaning
  • Keyword: Mixing
  • Keyword: Oxygen
  • Keyword: Air
  • Keyword: Heavy Ions
  • Keyword: Methane
  • Keyword: Electrons
  • Keyword: Proportional Counters
  • Keyword: Ions
  • Keyword: Probability
  • Keyword: Atmosphere
  • Keyword: Energy
  • Keyword: Sensitivity
  • Keyword: Stability
  • Keyword: Anions
  • Keyword: Physics
  • Keyword: Carbon Dioxide
  • Keyword: Gases
  • Keyword: Production
  • Keyword: Molecules
  • Keyword: Decomposition
  • Keyword: Gas Flow
  • Keyword: Contamination
  • Keyword: Performance
  • Keyword: Measured Values

Source

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

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: ORNL-2887
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 4199478
  • Archival Resource Key: ark:/67531/metadc876743

Note

  • Display Note: NTIS