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Radiation Effect on the Viscosity of the Simple B2O3 Glasses

Published online by Cambridge University Press:  10 February 2011

A. Barbu  and
G. Jaskierowicz
A. Barbu
Affiliation:
Laboratoire des Solides Irradiés (CEA-CNRS), Ecole Polytechnique, 91128, PALAISEAU, cedex, FRANCE
G. Jaskierowicz
Affiliation:
Laboratoire des Solides Irradiés (CEA-CNRS), Ecole Polytechnique, 91128, PALAISEAU, cedex, FRANCE
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Abstract

The creep velocity of B203 glass fibers under irradiation with 2.5 MeV electrons at low flux ( around 5 1013 e-cm−2s−1) has been studied versus temperature. As under very high energy heavy ions irradiation (1.6 GeV argon), the viscosity is drastically reduced below 300°C. An important difference between the two kinds of irradiation is the occurrence of a compaction phenomenon at the beginning of electron irradiation experiments. The results can be understood by assuming two totally different mechanisms: a relaxation driven by melting of the glass along the path of the ions for very high energy heavy ion irradiations and a relaxation driven by individual radiation induced points defects for high energy electron irradiations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 504: Symposium KK – Atomistic Mechanisms in Beam Synthesis & Irradiation… , 1997 , 117
Copyright
Copyright © Materials Research Society 1998

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References

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