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Vibrational Excitation and De-Excitation and Charge-Transfer of Molecular Ions in Drift Tubes

  • E. E. Ferguson

Abstract

The combination of a drift tube and a flowing afterglow constructed by McFarland for his Ph.D. thesis1 opened up a wide range of experiments which can be carried out. The addition of the selected ion feature by Adams and Smith2 has substantially enhanced the versatility of this device, now called the selected ion flow drift tube (SIFDT). Theoretical advances in understanding the velocity (or energy) distributions of ions in drift tubes have greatly enhanced their utility. Lin and Bardsley3 and Viehland and Mason4 have successfully treated the problem of atomic ions in atomic buffer gases so that cross-sections or thermodynamic rate constants can be obtained for atomic ion reactions even though their velocity distributions are not Maxwellian. This allows drift tubes to be used for rate constant (or cross-section) measurements between thermal to a few eV, closing the gap between thermal energy and beam measurements.

Keywords

Vibrational Energy Drift Tube Vibrational Excitation Vibrational Relaxation Rotational Excitation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag/Wien 1984

Authors and Affiliations

  • E. E. Ferguson
    • 1
  1. 1.Aeronomy LaboratoryNOAABoulderUSA

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