Accession Number : AD0762060

Title :   Molecular Mechanisms of Conduction and Polarization in Water Vapor, Liquid Water, and Ice.

Descriptive Note : Technical rept.,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR INSULATION RESEARCH

Personal Author(s) : VON Hippel,Arthur R.

Report Date : MAY 1973

Pagination or Media Count : 33

Abstract : After a short review of the pertinent prehistory, the investigation starts with water vapor. Thermal ionization requires formation of special association complexes and their dissociation by infrared vibrations. The corresponding process occurs in water and is being analyzed in detail. Proton tunneling appears interdicted by a 6proton polaron6 effect. The dielectric polarization for water and for ice are of very different origin as their temperature dependence clarifies; the former is correlated to the break-up of a glaseous tetrahedral structure, the latter is initiated by a quantum transition. Ice proves not to be a proton semi-conductor; perfect ice crystals seem to be insulators. The results of previous observers have been falsified by multicrystallinity and insufficient time scales of observation. (Author-PL)

Descriptors :   (*WATER, ELECTRICAL CONDUCTIVITY), (*WATER VAPOR, ELECTRICAL CONDUCTIVITY), (*ICE, ELECTRICAL CONDUCTIVITY), POLARIZATION, IONIZATION, GAS IONIZATION, IONS, THEORY, NUMERICAL ANALYSIS, PRESSURE, TEMPERATURE, MOLECULAR ASSOCIATION, TUNNELING(ELECTRONICS), SEMICONDUCTORS

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE