Temperature dependence of cavity ionization chamber response

Abstract

The temperature dependence of the cavity ion chamber response was measured at room temperature in the range 17 °C to 27 °C. By analysing the variation of the ionization current with temperature produced in the cavity chamber, the temperature coefficient of the cavity chamber response was evaluated. The values were 4.1 × 10−4 °C−1, 4.3 × 10−4 °C−1 and 2 × 10−5 °C−1 for chambers made of C552 air equivalent plastic, polyoxymethylene and graphite, respectively.