Accession Number : AD0622276

Title :   STUDY OF IONIZATION POTENTIAL OF SMALL PARTICLES.

Descriptive Note : Final rept. for 16 Jul 64-15 Jul 65,

Corporate Author : UNIFIED SCIENCE ASSOCIATES INC PASADENA CALIF

Personal Author(s) : Luke,Keung P. ; Naiditch,Sam

Report Date : OCT 1965

Pagination or Media Count : 94

Abstract : The ionization potential of small particles was studied. A photoionization technique was chosen for this measurement, using a Kingdon cage as an ion detector. Particles of aluminum and copper were produced in a helium gas. However, the suspension time of these particles in the gas was too short to permit work function measurement. As an alternative, an apparatus was constructed to produce a continuous supply of mercury particles by using a flowing stream of helium gas and a nucleating agent. In related experiments, monodispersed sulfur hydrosols and possibly cesium particles were produced. For particle-sizing work, a mobility and a simple light-scattering apparatus have been prepared. Theoretical work included analyses of the effect of particle size on particle work function, the cooling process of a hot vapor in a cooler gas and the formation mechanism of monodispersed sulfur hydrosols. (Author)

Descriptors :   (*IONIZATION POTENTIALS, PARTICLES), ALUMINUM, COPPER, IONIZATION, PARTICLE SIZE, WORK FUNCTIONS, COOLING

Distribution Statement : APPROVED FOR PUBLIC RELEASE