LINE MIXING BY COLLISIONS IN THE FAR INFRARED SPECTRUM OF AMMONIA,

Abstract

The effect of mixing by collisions on overlapping lines in the far-infrared (rotation) spectrum of gaseous ammonia was studied. A collapse of the inversion doublets into a single line, similar to the collapse of the microwave inversion spectrum into a nonresonant spectrum, has been observed. The line shape has been analyzed using an adapted form of Ben-Reuven's theory and values of the damping and cross-relaxation parameters have been obtained for the rotational lines 3 to 4, 4 to 5 and 5 to 6. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1968
Accession Number
AD0675638

Entities

People

  • A. Ben-reuven
  • A. Lightman

Organizations

  • Weizmann Institute of Science

Tags

DTIC Thesaurus Topics

  • Collapse
  • Collisions
  • Diffraction
  • Electromagnetic Spectra
  • Infrared Spectra
  • Inversion
  • Microwaves
  • Rotation
  • Spectra
  • Ultraviolet Spectra
  • Wave Phenomena

Fields of Study

  • Physics

Readers

  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Spectroscopy.