RELATIVE INTENSITY MEASUREMENTS IN MICROWAVE SPECTROSCOPY

Abstract

A method is described for the measurement of peak intensity ratios of gas phase microwave absorption lines. Large errors associated with multiple reflections in the waveguide were eliminated by careful design and the use of ferrite isolators. Detector nonlinearities were neutralized by using a precisely calibrated step attenuator allowing both lines involved in a ratio to be displayed with approximately the same amplitude. Means of minimizing additional sources of error are discussed. Application of the method to a number of problems indicates that ratios accurate to a few percent can be obtained.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1963
Accession Number
AD0407112

Entities

People

  • Alan S. Esbitt
  • E. B. Wilson

Organizations

  • Harvard University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Base Lines
  • Crystal Detectors
  • Crystal Holders
  • Detection
  • Detectors
  • Dipole Moments
  • Equivalent Circuits
  • Frequency
  • Ground State
  • Measurement
  • Microwave Spectroscopy
  • Modulation
  • Spectra
  • Spectroscopy
  • Square Waves
  • Stark Effect

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Microwave Engineering.