TITLE

Influence of substrate electric charge on heterogeneous ice phase formation in clouds

AUTHOR(S)
Klingo, V. V.
PUB. DATE
August 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 534 Issue 1, p482
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The influence of substrate electric charge on heterogeneous phase transition water vapor to ice has been considered. This consideration has been conducted in the light of general investigation of the ice phase formation possible mechanisms in clouds under seeding operations for precipitation regulation purpose. The burning temperature of pyrotechnic mixtures reaches 3000 K. Reagent particles become thermoelectronic emission sources. A charges separation leads to the formation of charged particles in a cloudy medium. Water vapor molecules as multipole systems interact with the charged particle and increase their concentration at a particle surface. The action effect of the charged particle to heterogeneous crystallization is conditioned by the water vapor supersaturation increase at the particle surface. The action effect of the charged particle to heterogeneous crystallization is conditioned by the water vapor supersaturation increase at the particle surface, decrease of an ice embryo radius and accordingly the free energy of ice embryo formation. The heterogeneous ice formation at the charged particle in the cloudy medium must take place by more high temperatures and greater ice contact angles at the particle. The heterogeneous crystallization estimations have been performed on the basis of the classical nucleation theory.
ACCESSION #
5669720

 

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