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The light emission intensity and transient optical absorption (TOA) have been measured in the wavelength range 400-750 nm in KU-1 silica core fibers under irradiation of the BARS-6 pulsed fission reactor (pulse duration 80 μs, fluence per pulse up to 5x10 12 n/cm 2 (E>0.5 eV), dose rate up to 10 5 Gy/s). The fast light emission component attributed to Cherenkov radiation...
UV absorption and luminescence are investigated in bulk samples of silicon oxynitride prepared by a hydrogen-free SPCVD-process (surface plasma chemical vapour deposition). The UV absorption spectra, apart from the well-known silicon oxygen deficient centre (Si-ODC), exhibit two unknown absorption bands with maxima at 5.77 and 4.54 eV and two unknown luminescence bands at 3.55 and 3.03 eV under laser...
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