Advanced Rocket Propulsion Technologies Boron Vapor Source for HEDM
Final rept. 24 May 2001-26 Apr 2002, Phase 1
CONTAINERLESS RESEARCH INC EVANSTON IL
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The research reported here is directed to the development of a boron vapor source for application in HEDM research. Specific goals of the research were i a boron vapor flux that allows formation of transparent solid pH2 with high concentrations of boron dopant species, up to 5 molar , ii a design for integration with the cryo-solid spectroscopy equipment at AFRLPRSP, Edwards Air Force Base. The boron vapor source was fabricated and tested. Its performance was demonstrated to agree well with the diffuse free evaporation model. C02 laser beam heating and melting of the boron samples was shown to yield intrinsic control of the boron sample temperature at the melting point, and a well-controlled boron flux. The boron vapor flux obtained with the apparatus is sufficient to prepare boron-doped pH2 HEDM solids at rates of 100 micrometershour at boron concentrations of 1.4 mol , and at much higher rates at smaller boron concentrations. A Phase II SBIR proposal was prepared and submitted to the Air Force.
- Physical Chemistry
- Rocket Propellants