Optical Glasses Transmittance Reduction Under Gamma Radiation Exposure at Different Temperatures

The paper discusses the results of a study on the changes in transmittance coefficient of optical glasses at wavelengths of 455, 808, and 1550 nm under gamma radiation exposure up to a total accumulated dose of 2 Mrad at ambient temperatures of +25 °C and -30 °C are presented. The purpose of the study was a qualitative comparison of the radiation resistance of typical representatives of the classes of optical glasses: lanthanum crown, heavy flint, crown and heavy lanthanum flint.