THE IONIZATION OF WATER, METHYLAMINE, AND METHYL ALCOHOL, USING ELECTRON AND ION IMPACT

Abstract

The ionization of H2O was investigated, using charge exchange in a double mass spectrometer. The breakdown graph was constructed. A break in the electron impact ionization efficiency curve is explained as being due to preionization, as its explanation as being due to an ion-molecule reaction between H(+) ions and H2O seems to be less probable. The appearance potential of OH(+) was found to be considerably higher with charge exchange than when electron impact was used, which agrees with an earlier finding that intercombination transitions seem to be more strictly forbidden in charge exchange than in electron impact. CH3NH2 and CH3OH were investigated, using charge exchange at elevated pressures. The breaks in the ionization efficiency curves for these molecules are discussed and ascribed to preionization or secondary processes.

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Document Details

Document Type
Technical Report
Publication Date
May 10, 1966
Accession Number
AD0637661

Entities

People

  • H. Sjoegren

Organizations

  • Royal Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Dissociation
  • Efficiency
  • Electron Energy
  • Electrons
  • Energy
  • Ionization
  • Mass Spectra
  • Mass Spectrometers
  • Mass Spectrometry
  • Measurement
  • Molecules
  • Security
  • Spectra
  • Spectroscopy
  • United States

Fields of Study

  • Physics

Readers

  • Molecular Photonics/Laser Physics
  • Organic Chemistry

Technology Areas

  • Microelectronics