Accession Number : AD0476937


Title :   DEVELOPMENT OF A MODULATED BEAM MASS SPECTROMETER APPARATUS FOR GAS-SOLID REACTION KINETICS STUDIES.


Descriptive Note : Technical summary rept. 1 Jul 64-1 Jul 65,


Corporate Author : AVCO CORP WILMINGTON MA RESEARCH AND ADVANCED DEVELOPMENT DIV


Personal Author(s) : Steele, Warren


Report Date : Oct 1965


Pagination or Media Count : 31


Abstract : An apparatus combining the techniques of pulsed molecular beams and mass spectrometry was developed to study the kinetics of gas-surface reactions. This apparatus consists of a molecular beam source, a variable speed beam chopper, and a reaction chamber coupled to a high sensitivity, wide mass range mass spectrometer. Four separate areas connected only by slits are pumped by high speed diffusion pumps. New detector electronics have been added to the mass spectrometer providing for pulse detection. Some preliminary observations of the tungsten-oxygen reaction, part of a larger program for the study of the deleterious interaction of refractory structural materials with air, are presented to illustrate performance of the apparatus. (Author)


Descriptors :   *MASS SPECTROSCOPY , HIGH TEMPERATURE , MOLECULAR BEAMS , REACTION KINETICS , SURFACES , GASES , SOLIDS , MODULATION , INTENSITY , FREQUENCY , ION SOURCES , MECHANICAL DRAWING , LOW PRESSURE , ELECTROMAGNETIC PULSES , HEAT OF ACTIVATION , TUNGSTEN , OXIDATION , TUNGSTEN COMPOUNDS , OXIDES , IDENTIFICATION , RESISTORS , ELECTRON MULTIPLIERS , IMPEDANCE MATCHING , TUNED AMPLIFIERS , DETECTORS


Subject Categories : Test Facilities, Equipment and Methods
      Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE