INVESTIGATION OF THE BASIC CONTAMINANT REACTIONS IN RE-ENTRY WAKES
Final rept. 1 Jun 1964-31 May 1965
UNITED AIRCRAFT RESEARCH LABS EAST HARTFORD CT
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Three different experimental laboratory investigations were conducted to determine the effect of the presence of impurities which exist in re-entry wakes in the form of alkali metals and their compounds on the electron number density and effective collision frequency. In the first experimental investigation, electron cyclotron resonance techniques were used to measure the equilibrium electron number density and effective electron collision frequency in sodium hydroxide vapor over the energy range from 0.09 to 0.126 eV. In the second investigation, a modified Ramsauer beam experiment was used to determine the total collision cross section of sodium ions with several of the atmospheric constituents, such as oxygen, nitrogen, and nitric oxide, over the energy range of 1.08 to 10.35 eV. In the third investigation, a crossed-beam double modulation technique, in which an electron beam was interacted with a molecular beam of sodium hydroxide, was used to study negative ion production by electron impact.
- Combustion and Ignition
- Atmospheric Physics