Molecular Absorption of Atmospheric Species.

Abstract

The propagation of microwaves and millimeterwaves through the disturbed atmosphere is affected by molecular absorption that can be significantly different than the absorption in the ambient atmosphere. This is due to two factors. First, the constituents of the ambient atmosphere will exhibit significantly different electromagnetic properties at elevated temperatures. Second, many additional species that are strong absorbers of microwaves, such as HNO3, HNO2, O3, NO2, H202, OH, and N20, are present in the disturbed atmosphere. This work addressed both of these issues. A preliminary version of a code that utilized the previously available molecular data base was written in a form that would be compatible with NORSE. This code was turned over to PRi (the keeper of the NORSE code) and is currently being integrated into it. In addition, measurements to 1000K were made on one transition of H20 as a check on the extrapolation to higher temperature that was used in this code.

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Document Details

Document Type
Technical Report
Publication Date
Dec 17, 1985
Accession Number
ADA164024

Entities

People

  • Frank C. De Lucia

Organizations

  • Duke University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Absorption
  • Atmospheres
  • Databases
  • Electromagnetic Properties
  • Elements
  • Energy Levels
  • Extrapolation
  • Frequency
  • Measurement
  • Microwave Frequency
  • Microwaves
  • Military Research
  • Molecular Physics
  • Molecules
  • Partial Pressure
  • Small Molecules
  • Transitions

Readers

  • Electronics Engineering
  • Environmental Impact Assessment (EIA) of Proposed Air Force Base Actions.
  • Spectroscopy.