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Photoplastic Effect on Ice

Published online by Cambridge University Press:  16 February 2011

Niyaz N. Khusnatdinov and
Victor F. Petrenko
Niyaz N. Khusnatdinov
Affiliation:
Thayer School of Engineering, Dartmouth College, Hanover, NH 03755
Victor F. Petrenko
Affiliation:
Thayer School of Engineering, Dartmouth College, Hanover, NH 03755
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Abstract

The study of the photoplastic effect (PPE) on ice is essential for both fundamental and applied reasons. It is important for an understanding of dislocation motion as well as the flow of glaciers in cold regions that occurs under intensive solar radiation. It was found that the illumination of ice with UV light (λ < 300 nm) leads to its irreversible hardening1. A prolonged irradiation with a total light exposure of about 8.10−5 J/cm2 at λ= 260 nm can change the creep rate up to 60 percent. Even more pronounced PPE was found in HCI-doped ice with the concentration, n= 1018 cm−3. It is suggested that PPE is caused by the excitation of “autoionization” reaction which was found responsible for the photoconductivity of ice.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 373: Symposium Y – Microstructure of Irradiated Materials , 1994, 317
Copyright
Copyright © Materials Research Society 1995

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References

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