Accession Number : ADA189490

Title :   Ice Particle Charge Transfer Studies.

Descriptive Note : Final rept. Aug 85-Jul 87,

Corporate Author : UNIVERSITY OF MANCHESTER INST OF SCIENCE AND TECHNOLOGY (ENGLAND) DEPT OF PHY SICS

Personal Author(s) : Saunders, C P

PDF Url : ADA189490

Report Date : 30 Sep 1987

Pagination or Media Count : 130

Abstract : Electric charge transfer between ice crystals and an ice target has been measured under a range of environmental conditions in which simulate the environment of a thunderstorm. The charge transfer is very dependent on ice crystal size and cold chamber which permits long growth times has been used to determine charge/size relationships for crystal sizes up to 800 micrometers. Also, a new hot-wire device has been developed to measure liquid water content. The collection efficiencies of a rimed target for water droplets and ice crystals have been determined. High velocity crystal/target impacts up to 100 m/s show a maximum charge transfer at 25 m/s.

Descriptors :   *CHARGE TRANSFER, *ICE, *THUNDERSTORMS, CHAMBERS, COLLECTION, CRYSTALS, DROPS, EFFICIENCY, ELECTRIC CHARGE, GROWTH(GENERAL), HOT WIRE, LOW TEMPERATURE, MOISTURE CONTENT, SIZES(DIMENSIONS), TARGETS, WATER, ICE FORMATION, AIRFRAMES

Subject Categories : Electricity and Magnetism
      Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE