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Silicon was produced by alternate pulse feeding of the reactants SiF4 gas and liquid sodium. The average temperature in the reactor could be controlled, by regulating the amount of reactant in each pulse. Silicon tetrafluoride gas was analyzed by mass spectrometry to determine the nature and amount of contained volatile impurities which included silicon oxyfluorides, sulfur oxyfluorides, and sulfur dioxide. Sodium metal was analyzed by emission spectrography, and it was found to contain only calcium and copper as impurities. Kapur, V. K. and Nanis, L. and Sanjurjo, A. Jet Propulsion Laboratory NASA-CR-153407, ERDA/JPL-954471-77/2, QPR-5 NAS7-100; JPL-955471; SRI PROJ. PYU-4980...

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