CONDUCTIVITY CHANGES PRODUCED IN ICE BY OPTICAL IRRADIATION .8 TO 2.7.

A series of experiments attempt to produce orientational defects and ions by optical injection. The basic experiment was one on transient photo-conduction produced by an intense light pulse. The effects of intensity and wavelength of the incident light, temperature of the sample and area of illumina...

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Bibliographic Details
Main Authors: Camp,P. R., Spears,D. L.
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1966
Subjects:
Radiation and Nuclear Chemistry
Snow
Ice and Permafrost
(*PHOTOCHEMICAL REACTIONS
ICE)
(*ICE
ELECTRICAL CONDUCTIVITY)
LIGHT
ABSORPTION
CRYSTAL DEFECTS
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0638923
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0638923
Description
Summary:A series of experiments attempt to produce orientational defects and ions by optical injection. The basic experiment was one on transient photo-conduction produced by an intense light pulse. The effects of intensity and wavelength of the incident light, temperature of the sample and area of illumination of the sample were studied. It was concluded that neither orientational defects nor ion pairs were produced in appreciable quantity by the light but that the apparent photo-conduction observed was the result of flash-heating of a thin surface region which had significantly different properties than had the bulk of the sample. Simple and somewhat speculative assumptions regarding the photo-generation process lead to the conclusion that the photo-efficiency, at least for ion pair production, must be very low. (Author)

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