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 have been eliminated by careful design and the use of ferrite isolators. Detector nonlinearities have been 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. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1943
Accession Number
AD0420683

Entities

People

  • Alan S. Esbitt
  • E. Bright. Wilson Jr.

Organizations

  • Harvard University

Tags

DTIC Thesaurus Topics

  • Absorption
  • Amplitude
  • Attenuators
  • Detectors
  • Intensity
  • Measurement
  • Microwave Spectroscopy
  • Microwaves
  • Radio Frequency Spectroscopy
  • Reflection
  • Spectroscopy
  • Warning Systems
  • Waveguides

Fields of Study

  • Physics

Readers

  • Approximation Theory.
  • Microwave Engineering.
  • Spectroscopy.