A DOUBLE RESONANCE MODULATED MICROWAVE SPECTROMETER.

Abstract

A practical non-Stark modulated double resonance microwave spectrometer has been constructed and tested in which frequency modulation is applied to one (strong) microwave source, the power from which passes through the sample gas but is prevented from reaching the crystal by filters. The second source does reach the crystal but is unmodulated. The modulation is therefore transmitted to the crystal and tuned amplifier exclusively via the phenomenon of double quantum absorption. The only transitions observed are those which occur as active pairs involving a common energy level, the two frequencies being near the two source frequencies. This provides extremely specific spectra for identification in complex situations, and is a convenient way of searching for linked transitions which are useful for assignment purposes. Because no Stark electrode is needed, it is easier to construct special absorption cells such as coiled guides, high temperature cells, free space paths, etc. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1966
Accession Number
AD0627815

Entities

People

  • E. Bright. Wilson Jr.
  • R. C. Woods Iii
  • Ronn

Tags

DTIC Thesaurus Topics

  • Absorption
  • Amplifiers
  • Electrodes
  • Energy Levels
  • Frequency
  • Frequency Modulation
  • High Temperature
  • Identification
  • Microwaves
  • Modulation
  • Resonance
  • Spectrometers
  • Transitions
  • Tuned Amplifiers

Fields of Study

  • Physics

Readers

  • Radar Systems Engineering.
  • Semiconductor Device Technology
  • Spectroscopy.

Technology Areas

  • Quantum Computing
  • Space