The ethanol-chlorobenzene dosimeter (ECB) has got wide-spread application in gamma radiation processing and at (linear) electron accelerators. Its reliable performance was proved in a number of international and bilateral intercomparison programmes, including the IAEA and several National Institutes of Standards. The method is in routine use in more than twenty countries.

The basic radiation chemical process, used for dosimetry, is the formation of HCl upon irradiation. Its concentration is a linear function of the dose absorbed in the solution in a wide dose range of 0.1-100 kGy. At higher doses the reactions become more complicated.

The absorbed dose is determined by measuring the concentration of HCl(cHCl) formed during irradiation. Oscillometric titration is the most frequently used method. The irradiated dosimeter can be re-evaluated many times.


Selected Publications

Zs. Horváth et al: The radiofrequency (oscillometric) alcoholic chlorobenzene dosimeter;
radiochim. Acta 13 (1970), 150-152

A. Kovács et al: Evaluation of irradiated ethanol-monochlorobenzene dosimeters by
conductivity method; Proc IAEA Symp. High-Dose Dosimetry, Vienna (1984) 143-156

A. Kovács et al.: Oscillometric and Conductometric Analysis of Aqueous and Organic
Dosimeter Solutions; Radiat. Phys. Chem. 46/4-6, pp 1211-1215 (1995)

M. Osvay: Measurements on Shielding Experiments Using Al2O3:Mg.Y TL Detectors; Rad.
Prot. Dosimetry, 66/1-4, pp 217-219 (1996)

See further relevant articles in the next chapter (Electron Accelerator)

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