METHOD OF DETERMINING NOMINAL AMPLITUDE OF SPECTROMETRIC PULSES

摘要

FIELD: physics.SUBSTANCE: method includes detecting current pulses of a pulsed fission chamber using a spectrometric amplifier. The method includes first determining the gain Kof the spectrometric amplifier; placing the pulsed fission chamber in neutron flux; detecting the shape of the output voltage pulse of the spectrometric amplifier on the input resistance of a discriminator and saving the digitised shape of the output voltage pulse of the spectrometric amplifier with amplitude Uon an external medium; using the gain Kto recalculate stored data and restoring the initial current pulse of the pulsed fission chamber, time-integration thereof, calculating the value of charge in the pulse and calculating the normalising factor; determining the nominal amplitude of spectrometric voltage pulses Uat the input of the discriminator of an intensimeter by normalising the stored output voltage pulse of the spectrometric amplifier with amplitude U.EFFECT: higher accuracy of determining the nominal amplitude of spectrometric voltage pulses, easy processing of spectrometric information and shorter processing time thereof.