On a Mass Spectrometric Angular Distribution Study of the Effusion of the Potassium Chloride Vapor System from Cylindrical Orifices

摘要: A mass spectrometric investigation has been made of the angular number distributions KCl and K2Cl2 molecules effusing from cylindrical orifices with geometries L/R = 1−4 at temperatures 565, 585, 605°C. It was found that for neither nor molecule agrees predictions classical Clausing model. The distribution monomer is more diffuse than predicted by theory, whereas dimer highly focused experimental or theoretical distribution. For a given orifice geometry, progressive defocusing both beams observed as temperature increased. None presently proposed models capable predicting distributions. However, substantial evidence exists to suggest dissociation on walls an important factor.