Patent ID: 8513614

Claim:
A method for determining the intensity of ionizing radiation using a detector with a multiplicity of detector elements, wherein the radiation generates electrical signals with a certain pulse shape and signal frequency, and the number of the signal pulses is deemed a measure of the radiation intensity, the method comprising: supplying the signal pulses to a preamplifier/signal conditioner; supplying, in parallel or in series, the amplified and conditioned signal pulses, firstly, to a pulse-height discriminator operating continuously and with an energy threshold and, secondly, to a clocked pulse-height discriminator operating with a clock rate and an energy threshold; registering the signal pulses by a combination logic; and transmitting the registered signal pulses to a counter, wherein provision is made for feedback, by which a pulse shape of the signal pulses are set as a function of the signal frequency, wherein a first count result in the clocked pulse-height discriminator is not counted.