High Dose Rate-Meter Based on Measurement of Electric Resistance of Liquid Organic Compounds

—Characteristics of Measuring Cell Enclosing Dodecane—

Abstract

A direct reading high dose rate-meter which was composed of a measuring cell enclosing dodecane and a tera ohm-meter was devised. Dependence of electric resistance upon dose rate and effect of temperature of this measuring cell during γ-irradiation were compared with those of the detector enclosing liquid parafne reported previously.
It was thereby found that this cell was superior in the linearity of electric resistance for the dose rate and reproducible to about ±2% on repeated irradiation. In addition, this measuring cell was easier to make and could be regenerated by washing the cell of decreased resistance. This dose rate-meter was suitable for the measurements within a range of dose rate of 10³ to 10⁶ R/h.