An Analysis of Middle Ultraviolet Dayglow Spectra

Abstract

Middle ultraviolet spectra from 1800 to 3400A are analyzed. These spectra were obtained from the March 1990 rocket flight of the NPS MUSTANG instrument over the altitudes 105km to 315km. The data were compared with computer generated synthetic spectra. A least squares fitting procedure was developed for this purpose. Each data point was weighted using the standard deviation of the means. Synthetic spectra were generated for the following emissions: N2 Vegard-Kaphan; N2 Lyman-Birge-Hopfield; NO gamma, delta, and epsilon; OI 2972A, OII 2470A; and NII 2143A. Altitude profiles for the emissions were obtained. Tentative identification was made of the OIII 2853A emission. A comparison of VK and LBH profiles demonstrates the process of N2 A-state quenching by atomic oxygen.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1991
Accession Number
ADA245965

Entities

People

  • Billie S. Walden

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Altitude
  • Computer Programs
  • Computers
  • Data Analysis
  • Electron Density
  • Electronic States
  • Elements
  • Emission
  • Energy Levels
  • Ionosondes
  • Ionosphere
  • Measurement
  • Radiation
  • Scattering
  • Spectra
  • Spectroscopy
  • Standards

Fields of Study

  • Physics

Readers

  • Molecular Photonics/Laser Physics
  • Spectroscopy.