Naslov
Chemical Dosimetry system for criticality accidents

Autori
Miljanić, Saveta ; Ilijaš, Boris

Izvornik
Radiation protection dosimetry (0144-8420) 110 (2004), 1-4; 477-481

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Chemical dosimetry; Mixed field dosimetry; Dosimetry for criticality accidents

Sažetak
Ruđer Bošković Institute (RBI) criticality dosimetry system consists of a chemical dosimetry system for measuring the total (neutron+gamma) dose, and a thermoluminescent (TL) dosimetry system for a separate determination of the gamma ray component. The use of the chemical dosemeter solution chlorobenzene-ethanol-trimethylpentane (CET) is based on the radiolytic formation of hydrochloric acid, which protonates a pH indicator, thymolsulphonphthalein. The high molar absorptivity of its red form at 552 nm is responsible for a high sensitivity of the system: doses in the range 0.2-15 Gy can be measured. The dosemeter has been designed as a glass ampoule filled with the CET solution and inserted into a pen-shaped plastic holder. For dose determinations, a newly constructed optoelectronic reader has been used. The RBI team took part in the International Intercomparison of Criticality Accident Dosimetry Systems at the SILENE Reactor, Valduc, June 2002, with the CET dosimetry system. For gamma ray dose determination TLD-700 TL detectors were used. The results obtained with CET dosemeter show very good agreement with the reference values.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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