Shielding glass plates for mini hot cells or glovebox windows, using RS 520 or RS 360 type shielding glass, is generally laminated on both sides, with a 1/8 inch thick (3 mm) scratch shield of RS 253 low iron content glass to provide scratch protection to these scratch sensitive glasses. The laminated plates serve as the hot and cold side cover plates for the window assembly. The glasses are laminated together into a simple unit with a clear, radiation resistant epoxy. This technique finds application only in dry windows and only for low or medium dose rate applications.
If the window design requires a thick slab of glass, we recommend the scratch shields not be laminated to the shield slab, due to the potential of thermal stress breakage of the shield slab during the lamination process. The scratch shields in this case are mounted separately and individually in the window assembly. This design provides a slight reduction in light transmissibility due to the additional reflection surfaces; however this minor problem may be partially overcome by applying AR (anti-reflecting) coating to the interior scratch shield glass surfaces. Please contact us for an evaluation of your specific application requirements.
Back to Topic List
Data and information contained in the tutorial was written by Dale A. Tobias, Premier Technology, Inc. and Hienz E. Hoffman and William G. Wash, Schott Glass Technologies, Inc. and may be reproduced only with written consent.
For information, contact Lyle Freeman
Vice President of Business Development
(208) 782-9129 lfreeman@ptius.net
