Freezing Water with Sized AgI Particles. Part 1: A Survey

Abstract

A survey was made of previous experimental and theoretical attempts to determine the AgI particle size-ice nucleating activity relationship. This relationship is important since the successful phase transformation of water to ice in a supercooled cloud must depend on both the concentration and size of the injected AgI particles. Fletcher's classical sublimation theory was found to be inconsistent with the few existing experimental results. The surprising conclusion was reached that a proven explanation of the behavior of AgI as a function of particle size has not been given. The Goetz Aerosol Spectrometer is suggested as the instrument capable of measuring the long elusive AgI particle size-activity relationship.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1973
Accession Number
AD0758857

Entities

People

  • Hermann E. Gerber

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Artillery
  • Atmospheric Sciences
  • Boundary Layer
  • Clouds
  • Condensation
  • Condensation Nuclei
  • Coordinate Systems
  • Layers
  • Measurement
  • Particle Size
  • Particles
  • Phase Transformations
  • Surface Properties
  • Test And Evaluation
  • Transition Temperature
  • Weather Modification

Readers

  • Aerosol Science/Aerosol Physics
  • Polar and Arctic Studies
  • Theoretical Analysis.