Stilbene-Based Spectrometer for Unfolding the Energy Distribution of Fast Neutron Sources.

Autor: Savin, D. I., Urupa, I. V., Lupar, E. E., Ibragimov, R. F., Ryabeva, E. V.
Předmět:
Zdroj: Atomic Energy; Dec2022, Vol. 133 Issue 2, p109-114, 6p
Abstrakt: The article discusses the question of obtaining energy spectra of neutron and γ-quantum sources using a spectrometer based on a stilbene monocrystal for separation according to the pulse shape. A procedure for calibrating the spectrometric path is described. Mathematical modeling implementing the Monte Carlo method in the Geant4 environment was used to calculate the matrices of responses to neutrons and γ-quanta detected using this instrument confi guration. The spectra of the neutron and associated γ-radiation from the generators of 2.5 and 14 MeV neutrons are unfolded with the aid of the GRAVEL iterative algorithm. The relative width of peaks in unfolded neutron spectra (unfolding uncertainty) comprises 19 ± 0.3 and 7.2 ± 0.7% for D–T- and D–D-neutrons, respectively. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index