Accession Number : AD0282777

Title :   A MULTI-COMPARTMENT MIXING-TYPE CLOUD CHAMBER FOR SIMULTANEOUS DETERMINATION OF ICE-NUCLEUS CONCENTRATION AT VARIOUS TEMPERATURES

Corporate Author : INSTITUTE FOR ADVANCED STUDIES DUBLIN (IRELAND)

Personal Author(s) : POLLAK,L.W. ; METNIEKS,A.L.

Report Date : JUL 1962

Pagination or Media Count : 1

Abstract : A cloud chamber for inv tiga ing the ice-forming properties of natural and artificial aerosols consisting of three adjacent compartment is described. Each compartment is a mixing-type cloud chamber, each held t a different preselected temperature. The sample to be examined is introduced simultaneously into all compartments and the crystals which form in the compartmen s, are recorde in a sugar solution. The temperature distribution in the co partments and the composition of the sugar solution are detailed. The connection between the temperature of the sugar solution for melting and growing of ice crystals and for self-crystalisation of the sugar solution and the concentration of the sugar solution is discussed. T E MEASURING PROCEDURE IS OUTLINED AND EXAMPLES OF COUNTS OF FREEZING NUCLEI IN Dublin air are given. (Author)

Descriptors :   *CLOUD CHAMBERS, *ICE, CRYSTALS, DESIGN, FREEZING, INSTRUMENTATION, MELTING, NUCLEI, TEMPERATURE

Distribution Statement : APPROVED FOR PUBLIC RELEASE