Optimization of gamma detection methods for neutron energy analysis on eV neutron spectrometers.
Onorati D., Andreani C., Arcidiacono L., Fernandez-Alonzo F., Festa G., Krzystyniak M., Minniti T., Romanelli G., Scherillo A., Ulpiani P., Senesi R.
VI - Fisica applicata, acceleratori e beni culturali
Aula 29C-2 - Mercoledì 19 h 09:00 - 13:00
» Download abstract
This work provides the analysis of the gamma spectrum emitted by the gold analyser foil used on VESUVIO spectrometer (ISIS neutron source) after irradiation by epithermal neutrons. For this purpose, a biparametric data acquisition has allowed the simultaneous measurement of both neutron time-of-flight (NRCA) and gamma energy spectra (PGAA). The data analysis shows that the gold dominant contribution is in the energy region between 0--400 keV, discarded by VESUVIO YAP detectors in the present set-up. The results suggest the best operating energy range for the spectrometer and the usefulness of biparametric acquisition for a wide field of applications.