Accession Number : AD0633619

Title :   CHEMI-IONIZATION PROCESSES.

Descriptive Note : Annual summary scientific rept. no. 1,

Corporate Author : LOUVAIN UNIV (BELGIUM) LAB OF INORGANIC CHEMISTRY

Personal Author(s) : Tiggelen,A. Van ; de Jaegere,S.

Report Date : MAY 1966

Pagination or Media Count : 58

Abstract : The characteristics of isentropic expansion indicate that sampling orifices used for the extraction of ions from a flame burning at atmospheric pressure should be kept as small as possible if kinetics of ion reactions are to be investigated. The lens support of the mass spectrometer extraction chamber was modified and a Mecker burner will be used instead of the classic Bartholome-profile burner. The vibrating reed electrometer was replaced by a more sensitive instrument with faster response. A description is given of the construction of a new flashphotolysis apparatus, applied to the measurement of chemi-ionization reactions. A discussion is given of the requirements for the flash equipment. A conductimetric method for the measurement of the absolute value of the ion concentration is proposed. The possibility of isolating the different chemi-ionization reactions possible in flames through the flashconductimetric method is discussed. (Author)

Descriptors :   (*PHOTOCHEMICAL REACTIONS, IONIZATION), (*FLAMES, *GAS IONIZATION), IONS, REACTION KINETICS, SAMPLERS, MASS SPECTROSCOPY, SPECTRUM ANALYZERS, RADIOFREQUENCY LENSES, FLASH LAMPS, PHOTOLYSIS, CONCENTRATION(CHEMISTRY), CHEMICAL REACTIONS, BELGIUM

Subject Categories : Radiation and Nuclear Chemistry
      Atomic and Molecular Physics and Spectroscopy
      Plasma Physics and Magnetohydrodynamics
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE