KNUDSEN CELL MASS SPECTROMETRY STUDY OF MANGANESE TRIFLUORIDE VAPORIZATION

摘要

The Knudsen cell mass spectrometry has been applied to investigate vaporization of Manganese Trifluoride in temperature interval 873 - 1013 K. MnF_3, Mn_2F_6 and MnF_4 molecules were found in the gas phase. Atomic fluorine was not observed. MnF_3(s) sublimation was accompanied by decomposition. It was assumed that the most part of F atoms coming from the depth to the surface of MnF_3 crystal are consumed on MnF_4(gas) formation.