Radiation Effects On The Low Temperature Coefficient Of Thermal Expansion Of Low-CTE Materials

Paige L. Higby; Charles G. Askins; Jackie A. Ruller; E.Joseph Friebele

doi:10.1117/12.948179

16 January 1989 Radiation Effects On The Low Temperature Coefficient Of Thermal Expansion Of Low-CTE Materials

Paige L. Higby, Charles G. Askins, Jackie A. Ruller, E.Joseph Friebele

Proceedings Volume 0970, Properties and Characteristics of Optical Glass; (1989) https://doi.org/10.1117/12.948179
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

Abstract

Materials for large space optics require low coefficients of thermal expansion (CTE) in order for the components fabricated from them to maintain their strict figure specifications under thermal gradients and cycling. The environment in space contains high energy photons and charged particles such as electrons and protons, which can cause electronic defects, leading to such physical effects as compaction and discoloration. The change in CTE upon exposure to ionizing radiation has been studied here, and it has been found that the low-CTE characteristics of some materials are severely effected by electron irradiation.

Citation Download Citation

Paige L. Higby, Charles G. Askins, Jackie A. Ruller, and E.Joseph Friebele "Radiation Effects On The Low Temperature Coefficient Of Thermal Expansion Of Low-CTE Materials", Proc. SPIE 0970, Properties and Characteristics of Optical Glass, (16 January 1989); https://doi.org/10.1117/12.948179

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