Patent ID: 7789557

Claim:
A superconducting radiometry apparatus comprising: a micro-calorie meter that detects an energy of a radiant ray as a temperature change; a shunt resistance connected in parallel to the micro-calorie meter and having a resistance value smaller than that of the micro-calorie meter; a signal detection mechanism that detects an electric current flowing to the micro-calorie meter; a bias electric source that applies a constant voltage to the micro-calorie meter; a heat addition device that adds a quantity of heat to the micro-calorie meter; a peak value monitor that measures, in synchronization with the addition of the quantity of heat to the micro-calorie meter by the heat addition device, a peak value of an output voltage corresponding to an output signal from the signal detection mechanism; and an energy correction device that corrects, on the basis of an output from the peak value monitor, an energy value so as to become a peak value corresponding to the quantity of heat added to the micro-calorie meter by the heat addition device.