Accession Number : AD0282342

Title :   AN INVESTIGATION OF THE ADSORPTION AND OTHER PROPERTIES OF ACTIVATED ATMOSPHERIC GASES

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : DONALDSON,E.E.

Report Date : 31 DEC 1961

Pagination or Media Count : 1

Abstract : A study of positive ion emission from tungsten filaments is made in which it is found that the positive ions are produced as continuous currents and as bursts, contributing to noise in tubes. The dependence of the currents on filament temperature and environmental gas is investigated and mechanisms of production are suggested. The operation and calibration of the Bayard-Alpert ionization gauge is investigated. Special emphasis is placed as an inquiry into the sources of non-linearity of the gauge. Chemical sputtering is investigated with a mass spectrograph. The limited investigation at low detection sensitivity has not demonstrated sputtering although a preliminary study has produced a promising method of elevating the work function of a surface ionization source. A further investigation is made of the activated state responsible for enhanced pumping of nitrogen. (Author)

Descriptors :   *ADSORPTION, *ATMOSPHERICS, *GAS IONIZATION, CIRCUITS, LOW TEMPERATURE RESEARCH, MEASUREMENT, NITROGEN, NOISE, SENSITIVITY, SPECTROGRAPHIC ANALYSIS, TUNGSTEN, WIRE

Distribution Statement : APPROVED FOR PUBLIC RELEASE