Neutron and gamma spectrometry in mixed neutron/gamma fields; Spektrometrie neutronu a gama ve smesnych polich neutronu a gama

Methods available in the Nuclear Research Institute (NRI) for neutron and gamma spectra unfolding are described. In NRI, these methods are being used to unfold spectra measured by stilbene scintillation spectrometers and by hydrogen-filled proportional chambers. Experiences from long-term use of stilbene detectors at the Military Academy in Brno are presented. Response function of stilbene crystals and hydrogen-filled proportional detectors are given. For hydrogen-filled detectors, detailed list of values of the parameters needed to calculate response functions is included. Special effort was made to include the parameters relevant for electric field calculation. (author)