Accession Number : AD0779743

Title :   Vibrational Nonequilibrium in Carbon Dioxide Electric Discharge Lasers,


Personal Author(s) : Murray,Edward Ray , Jr

Report Date : JAN 1974

Pagination or Media Count : 150

Abstract : An experimental and theoretical investigation of the vibrational nonequilibrium in a CO2 - N2 - He electric discharge was performed under strong nonequilibrium conditions. Measurements of 9.6 and 10.6 micron gain were made in a laser amplifier tube using a tuneable, spectrally pure CO2 laser and a double-beam diagnostic system. The vibrational temperature for each of the three vibrational modes of CO2 was determined experimentally from a knowledge of gain in both laser bands and from a direct measurement of the vibrational temperature of the asymmetric mode using a band reversal scheme. The transition rate and optical cross sections for the 10.6 micron band and the 9.6 micron band were measured. A theoretical performance prediction of laser gain and vibrational temperatures was made using all significant energy transfer processes.

Descriptors :   *Carbon dioxide lasers, *Molecular vibration, Transitions, Rates, Molecular energy levels, Temperature, Coupling(Interaction), Gain, Cross sections, Energy transfer

Subject Categories : Lasers and Masers
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE