Optical properties of the electron and gamma-ray irradiated soda-lime glass samples

Year 2018, , 1518 - 1523, 01.12.2018

Gülten Onay , Ramazan Şahin

https://doi.org/10.16984/saufenbilder.330029

Cited By: 1

Abstract

Optical transmission and absorption spectra of Soda-lime glass samples were studied after irradiation by 8
MeV electron and γ-ray beams. We used modified clinical LINAC for production of electron beam whereas
60Co was used as a γ-ray source. Optical properties of glass samples were analyzed for different doses and
radiation 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 and
we observed that these colour centers disappear slowly even at room temperature. Optical transmission
spectra of 8 MeV electron and γ-ray beam irradiated samples show spectacular absorption band in the
visible region. On the other hand, these absorption bands nearly recover themselves when the irradiated
samples are baked for a short time above 100 ◦C.

Keywords

irradiation, glass, gamma, electron beam, accelerator

Elektron ve gama demetleri ile ışınlanmış soda-lime cam örneklerin optik özellikleri

Abstract

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

Keywords

radyasyon, cam, gama, elektron demeti, Hızlandırıcı

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