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Spectroscopic studies of shock tube plasmas
1965
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Spectroscopic measurements were made on plasmas in electromagnetic shock tubes to test the state of equilibrium in these plasmas. In an Argon-Oxygen mixture the relative intensities of AII and AIII lines and of OII lines indicated that complete equilibrium was not established. In a Helium plasma the observed line intensities showed that the populations of the Hel levels agreed with a Boltzmann equilibrium distribution.
doi:10.14288/1.0085311
fatcat:4pcu6t3oufd47fw7h55q5e43ou