The effect of vacancies on the thermal conductivity of single crystal alumina (sapphire) at low temperatures
Technical Report
·
OSTI ID:139244
- Oak Ridge National Lab., TN (United States)
The effect of radiation on the thermal conductivity of alumina is an important design consideration in the development of microwave windows for ion cyclotron resonance heating (ICRH) systems for the heating of plasmas in fusion reactors. Several recent papers have addressed this question at higher temperatures and the present report extends the calculation of the effect of point defects to low temperatures. This extension of the calculations to low temperatures is of interest because it has been proposed to cool these windows to liquid nitrogen temperatures in order to take advantage of the much higher thermal conductivity of alumina at these temperatures.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- OSTI ID:
- 139244
- Report Number(s):
- DOE/ER--0313/13; ORNL/M--2722; ON: DE93013462
- Country of Publication:
- United States
- Language:
- English
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