Accession Number : AD0283009

Title :   STUDY FOR IMPROVEMENT OF MATERIALS CENTRAL MASS SPECTROMETER

Corporate Author : BELL AND HOWELL RESEARCH CENTER PASADENA CALIF

Personal Author(s) : PERKINS,GEORGE D. ; POLLOCK,DAVID H.

Report Date : JUN 1962

Pagination or Media Count : 1

Abstract : Efforts were concerned with improvemen s for a mass spectrograph to permit accurate analysis of olid mat rials. Met ods were discussed for improving spark yield, working sensitivity, ease of operation a d analytical accuracy. Improv ment in average ion yield and in ease of sp rk anipula io as achieved. Photographic emulsion variations were a serious limitation to sensitivity and to analysis accuracy but with a satisfactory plat , e sitivi y of appro i a ely 1 in 10 to the 9t power was obtained with exposure durations of about 1 1/2 hours. The flexibility of Knudsen Cell operation was greatly enhanced by a complete redesign of the supporting structure. (Author)

Descriptors :   *MASS SPECTROSCOPY, *SPECTRUM ANALYZERS, ION BEAMS, IONIZATION, MOLECULAR STRUCTURE, PHOTOGRAPHIC ANALYSIS, PHOTOGRAPHIC EMULSIONS, SENSITIVITY, SOLIDS, SPARK SHADOWGRAPH PHOTOGRAPHY

Distribution Statement : APPROVED FOR PUBLIC RELEASE