ABSTRACT
Radiation detectors are designed to detect the quantity of radiation present in, or incident on a medium. To do this, they detect the interactions that take place between the radiation and that medium. When using current mode, the creation of charge within the detector gives rise to an associated current. The average output current is recorded and therefore no information on individual interactions is available to the user. The result of a change in the response function of the detector may be a decrease in its energy resolution. The detection efficiency of a detector is a measure of the ratio of the number of pulses recorded in relation to the number of radiation quanta present. Two different types of detection efficiency are defined: the absolute counting efficiency, and the intrinsic counting efficiency. The angular dependence of a radiation detector describes its ability to detect incident radiation photons from different angles.
