What is Meinel System and OH Meinel Emission Bands?

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SUMMARY

The Meinel system refers to a series of hydroxyl (OH) emission bands identified in the upper atmosphere, specifically linked to chemiluminescence resulting from the reaction of hydrogen atoms with ozone. This phenomenon was first described by A. B. Meinel in his 1950 publication in the Astrophysical Journal. The OH emission bands are a significant component of the airglow, contributing to the spectral features observed in the night sky. Understanding these bands is crucial for atmospheric science and astrophysics.

PREREQUISITES
  • Basic knowledge of atmospheric chemistry
  • Familiarity with spectroscopic techniques
  • Understanding of chemiluminescence
  • Knowledge of the reaction between hydrogen and ozone
NEXT STEPS
  • Research the role of hydroxyl radicals in atmospheric chemistry
  • Study the methods of measuring airglow and its components
  • Explore advanced spectroscopic techniques for analyzing emission bands
  • Investigate the implications of Meinel bands in climate studies
USEFUL FOR

Atmospheric scientists, astrophysicists, and researchers interested in the chemical processes of the upper atmosphere and their effects on airglow phenomena.

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what is Meinel system?
and what is OH Meinel emission bands?
 
Astronomy news on Phys.org
Citation: Meinel, A. B., "OH emission bands in the spectrum of the night sky" Astrophys. J., 111, 555–564 (1950)

From the Glossary of Meteorology:

hydroxyl emission—(Also known as Meinel bands.) Spectroscopic feature seen in the upper atmosphere; a form of chemiluminescence due to the formation of vibrationally excited hydroxyl radicals in the reaction of hydrogen atoms with ozone,

H + O_3 \rightarrow OH + H_2

The origin of the emission was correctly identified by A. Meinel in the 1950s. The emission is a component of the airglow.

See also:

http://www.nature.com/nature/journal/v242/n5396/abs/242321a0.html
 

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