Naslov
Calibration coefficient of the SSNTD and equilibrium factor for radon

Autori
Planinić, Josip ; Vuković, Branko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Fifth Int. Symp. on the Natural Radiation Enviroment / - Salzburg, 1991, 8-8

Skup
Fifth Int. Symp. on the Natural Radiation Enviroment

Mjesto i datum
Salzburg, Austrija, 1991

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
effective dose equivalent ; equilibrium factor ; indoor radon concentrations

Sažetak
Disintegration, ventilation and deposition were considered as removal processes of the radon and its short-lived daughters in the air and the respective concentration equations were applied. Calibration coefficient (K_F) of the solid state nuclear track detector (SSNTD) LR-115 for radon and the equilibrium factor (F) were related to track densities of the bare detector (D) and the filtered one (D_0). Theoretical curves between the air exchange rate (L) and track density ratio (D/D_0) as well as between F and L were obtained. Also, a useful relationship of the calibration coefficient and detector sensitivity (k) was derived. The detector sensitivity was calibrated by means of radon chamber contained crushed uranium ore and by scintillation cells which gave k = 3, 29x10^ (-3) m, by standard etching conditions (10 % NaOH, 333K, 120 minutes etching time, visual counting of microscopic tracks). The detector efficiency was determined experimentally using a known Am-241 source but in the alpha particle energy region of (0, 5 – 4) MeV. During two years, the exposed detectors gave the average values of the equilibrium factor, calibration coefficient and indoor radon concentration of a single house living room in Osijek 0, 46 ; 142, 3 m(-1) and 37, 8 Bq m ^(-3), respectively.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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