saujs Sakarya University Journal of Science 2147-835X Sakarya University 10.16984/saufenbilder.330029 Metrology, Applied and Industrial Physics Metroloji,Uygulamalı ve Endüstriyel Fizik Optical properties of the electron and gamma-ray irradiated soda-lime glass samples Elektron ve gama demetleri ile ışınlanmış soda-lime cam örneklerin optik özellikleri Onay Gülten Şahin Ramazan AKDENİZ ÜNİVERSİTESİ 12 01 2018 22 6 1518 1523 07 21 2017 11 28 2017 Copyright © 1997, Sakarya University Journal of Science 1997 Sakarya University Journal of Science

Optical transmission and absorption spectra of Soda-lime glass samples were studied after irradiation by 8MeV electron and γ-ray beams. We used modified clinical LINAC for production of electron beam whereas60Co was used as a γ-ray source. Optical properties of glass samples were analyzed for different doses andradiation types. Irradiation induced color centers in the glass samples were observed in both cases.Moreover, time-dependent optical properties were also acquired after irradiation source was turned off andwe observed that these colour centers disappear slowly even at room temperature. Optical transmissionspectra of 8 MeV electron and γ-ray beam irradiated samples show spectacular absorption band in thevisible region. On the other hand, these absorption bands nearly recover themselves when the irradiatedsamples are baked for a short time above 100 ◦C.

Soda-limecam örneklerin optik geçirgenlik ve soğurma spektrumları 8 MeV elektron veγ-ışını demetlerine maruz bırakılması sonrasında çalışıldı. Elektrondemeti üretimi için modifiye klinik LINAC kullanılırken buna karşılık γ-ışınıkaynağı olarak Co-60 kullanıldı. Cam numunelerin optik özellikleri, farklıdozlar ve radyasyon türleri için analiz edildi. Her iki durumda da camörneklerinde radyasyonun sebep olduğu renk merkezleri gözlendi. Dahası da,ışınlama kaynağı kapatıldıktan sonra zamana bağlı optik özellikler de elde edilerekbu renk merkezlerinin oda sıcaklığında bile yavaşça kaybolduğu gözlendi. 8MeV elektron ve γ- ışını demetlerine maruz bırakılan örneklerin optikgeçirgenlik spektrumu, görünür bölgede sıradışı sopurma bandı göstermektedir. Öteyandan, ışınlanmış numuneler 100 °C' nin üzerinde kısa bir süre fırınlanınca busoğurma bantları neredeyse kaybolmaktadır.

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