A method for evaluating the thermal dimensional stability and homogeneity of beryllium mirrors is described. Thermal dimensional instabilities are shown to be highly dependent on crystalline anisotropy. An x-ray quality control technique is discussed which can be used to predict optical performance under changes in ambient temperature.
© 1970 Optical Society of America
Original Manuscript: April 15, 1970
Published: December 1, 1970
W. R. Goggin and J. W. Moberly, "Thermal Dimensional Instabilities of Beryllium Mirrors," Appl. Opt. 9, 2691-2696 (1970)