Transmittances of LiF, MgF2, CaF2, BaF2, Al2O3, and fused SiO2 were measured from 1050 Å to 3000 Å before and after irradiation by 1014 electrons/cm2 first at 1.0 MeV and then at 2.0 MeV. Similar measurements were made with 1014 electrons/cm2 at 2.0 MeV using Al2O3 to shield fused SiO2, ADP, calcite, and Corning glass filters 9–54 and 7–54 from the direct electron beam. The electron energy and dose represent what one might expect to encounter in the artificial radiation belt after one year in a circular, near polar orbit at 1400 km. From these measurements it is concluded MgF2, BaF2, and Al2O3 have the greatest potential for space applications in the uv.
© 1966 Optical Society of America
Original Manuscript: December 20, 1965
Published: June 1, 1966
Donald F. Heath and Paul A. Sacher, "Effects of a Simulated High-Energy Space Environment on the Ultraviolet Transmittance of Optical Materials between 1050 Å and 3000 Å," Appl. Opt. 5, 937-943 (1966)