Speaker
Description
At Joint Institute for Nuclear Research (JINR, Dubna, Russia), in the framework of the project TANGRA (TAgged Neutrons and Gamma RAys) [1], we continued the experiments for studying the inelastic scattering of fast neutrons on some important for nuclear science and technology isotopes [2]. We are using several different types of gamma-detectors, such as: NaI(Tl), BGO, Stilbene, HPGe, Plastic scintillators and LaBr3 [3-5]. The design of the experimental setup that includes a ring of gamma-detectors and a neutron generator, allows us to measure the angular distribution of gamma quanta with a good accuracy. A single HPGe gamma-detector and an ING-27 neutron generator we are using to determinate the cross-section of the inelastic neutron scattering reactions. The information about the gamma-ray energy and angular distributions, and cross-sections, makes it possible to test different models, describing neutron-nuclear reactions, and to improve the accuracy of the fast neutron elemental analysis.
The aim of this work is to determine the main characteristics of the experimental setups, such as: gamma and neutron efficiencies, energy and time resolutions, at different source-detector geometries and PMT’s high-voltages, for which point-type standar $^{137}Cs$ and $^{60}Co$ gamma-ray sources and 14.1MeV neutrons were used.
References
[1] TANGRA project, http://flnph.jinr.ru/en/facilities/tangra-project
[2] Valkovic V. 14 MeV Neutrons. Physics and Applications. CRC Press. New York. 2015.
[3] Ruskov I.N., Kopatch Yu N., Bystritsky V.M., et al. // Physics procedia. 2015. 64, No. 2. P.
163-170.
[4] Bystritsky V. M., Grozdanov D. N., Zontikov A. O. et al. // Phys. Part. Nuclei Lett., 2016.
13. P. 54.
[5] Grozdanov D.N., Fedorov N.A., Bystritski V.M. et al. // Phys. Atom. Nuclei 81, 588–594 (2018).
