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Measurement of 60CO gamma radiation induced attenuation in multimode step-index POF at 530 nm

Milan Kovacevic, Aleksandar Djordjevic, Svetislav Savovic, Jovan Bajic, Dragan Stupar, Milos Slankamenac, Milojko Kovacevic
2013 Nuclear Technology and Radiation Protection  
As op ti cal fibres are used ever more ex ten sively in space ap pli ca tions, nu clear in dus try, med icine and high-en ergy phys ics ex per i ments, it has be come es sen tial to in ves ti gate the in flu ence of ion iz ing ra di a tion on their char ac ter is tics. In this work, the ra di a tion-in duced at ten u a tion at 530 nm is in ves ti gated ex per i men tally in step-in dex multimode polymethyl-methacrylate plas tic op ti cal fibres ex posed to low dose-rate gamma ra di a tion. Cu
more » ... ra di a tion. Cu mu la tive doses ranged from 50 Gy to 500 Gy. The ra di a tion in duced at ten u a tion has been em pir i cally found to obey the power law RIA= aD b , where D is the to tal ra di a tion dose and a and b are the con stants deter mined by fit ting. Key words: plas tic op ti cal fi bre, gamma ra di a tion, ra di a tion in duced at ten u a tion Mi lan S. KOVA^EVI], Aleksandar \OR\EVI], Svetislav SAVOVI], Jovan S. BAJI], Dragan Z. STUPAR, Milo{ P. SLANKAMENAC, Milojko KOVA^EVI] MEREWE SLABQEWA U MULTIMODNOM OPTI^KOM VLAKNU NA 530 nm USLED OZRA^IVAWA GAMA ZRACIMA IZ 60 CO S obzirom na sve ~e{}e primenu opti~kih vlakana u svemirskim stanicama, nuklearnoj industriji, medicini i eksperimentima u fizici visokih energija, postalo je veoma va'no ispitati uticaj jonizuju}eg zra~ewa na wihove karakteristike. U ovom radu je eksperimentalno ispitivano slabqewe u multimodnom plasti~nom opti~kom vlaknu na 530 nm kao posledica ozra~ivawa gama zracima niske doze. Kumulativne doze gama zraka bile su u opsegu od 50 Gy do 500 Gy. Empirijski je utvr|eno da se slabqewe izazvano gama zracima niske doze -RIA mewa kao RIA = aD b , gde je D ukupna doza ozra~ivawa, a a i b su konstante ~ije su vrednosti dobijene fitovawem eksperimentalnih podataka. Kqu~ne re~i: plasti~no opti~ko vlakano, gama zra~ewe, slabqewe izazvano gama zra~ewem
doi:10.2298/ntrp1302158k fatcat:rbuspa2hozglhbuxnhqgmuuz44