Self-powered nuclear radiation detector comprising a cable assembly and a temperature compensation assembly, and method of correcting a temperature related change of an output signal

A method of correcting a temperature-related change in an output current of a self-powered nuclear radiation detector, the method comprising:

• exposing the self-powered nuclear radiation detector to nuclear radiation from a fixed source;
• measuring an output current of the self-powered nuclear radiation detector at a plurality of different temperatures;
• measuring an insulation resistance of the self-powered nuclear radiation detector at the plurality of different temperatures;
• measuring an insulation resistance of a temperature compensation assembly of the self-powered nuclear radiation detector at the plurality of different temperatures;
• determining a slope of a relationship between (1) a measured change of the output current of the self-powered nuclear radiation detector at the plurality of different temperatures and (2) a measured change of the insulation resistance of the temperature compensation assembly of the self-powered nuclear radiation detector at the plurality of different temperatures;
• determining a product of (1) the determined slope and (2) the measured change of the insulation resistance of the temperature compensation assembly of the self-powered nuclear radiation detector at the plurality of different temperatures;
• and
• adding the determined product to the measured output current of the self-powered nuclear radiation detector at the plurality of different temperatures to determine a temperature-corrected value of the output current of the self-powered nuclear radiation detector at the plurality of different temperatures.