Tests method for space-ionizing-radiation-induced coloration in glasses

According to complexity of space ionizing radiation, from study on kinetic of space-ionizing-radiation-induced coloration in glasses, this paper discussed problems faced in performance tests of space-ionizing-radiation-induced coloration in glasses, and a method of performance tests based on kinetic was proposed. Using this method, space radiation induced coloration in the glass serving in a given orbital (perigee 350 km, apogee 425 km, orbital inclination 51.6) were analyzed. It can be seen from the results, after 20 years in the orbital, the blue region optical transmission of the K9-HL glass decreases severely, leading to the glass's turning light yellow, and it certainly will do harm to the glass's usage as a fine optical material. Additionally, the applicability of performance tests of space-ionizing-radiation-induced coloration in glasses using 60Co- ray was discussed. It can be seen from the results, it gives to a large error using 60Co- ray as radiation resource to test space-ionizing-radiation-induced coloration in glasses, and the phenomenon is due to it that 60Co- ray has a large penetration depth in the glass and the relaxation process of color centers is not considered.