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H2O Maser Pumping by Shock Waves

Published online by Cambridge University Press:  07 August 2017

Jacques R.D. Lepine  and
Astrid Heske
Jacques R.D. Lepine
Affiliation:
Instituto Astronomico e Geofisico, Universidade de São Paulo CP 9638, 01065 São Paulo, Brazil
Astrid Heske
Affiliation:
Sterrewacht Leiden, Postbus 9513, NL-2300, The Netherlands

Abstract

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We discuss a simple H2O maser pumping mechanism in which the population inversion of the masing levels takes place during the quick cooling of the gas behind a shock wave. The population of the rotational energy levels in the initial hot state and final cool state of the molecular gas, and the decay paths between levels are analysed to calculate the average number of 22 GHz photons emitted per H2O molecule in the cooling process.

Type
Quiescent Clouds and Regions of Star Formation
Information
Symposium - International Astronomical Union , Volume 150: Astrochemistry of Cosmic Phenomena , 1992 , pp. 245 - 247
Copyright
Copyright © Kluwer 1992 

References

REFERENCES

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