A detailed study of the high energy neutron flux (15-20 MeV) at NCSR 'Demokritos' using a BC501A liquid scintillator

Autor:	E. Mitsi, R. Vlastou, M. Kokkoris, A. Kalamara, N. Patronis, V. Michalopoulou, Sotiris Chasapoglou, Athanasios Stamatopoulos, M. Axiotis, Zena Eleme, A. Lagoyannis
Rok vydání:	2020
Předmět:	Nuclear physics Physics Deuterium Neutron flux Astrophysics::High Energy Astrophysical Phenomena Nuclear Theory Neutron Scintillator Covariance Neutron radiation Nuclear Experiment Neutron temperature Beam (structure)
Zdroj:	HNPS Proceedings. 27:143
ISSN:	2654-0088 2654-007X
DOI:	10.12681/hnps.2996
Popis:	The current study was carried out for neutron beam energies ranging between 14.8 and 19.2 MeV using the 3 H( d,n ) 4 He reaction and included neutron/gamma discrimination and neutron monitoring utilizing a BC501A liquid scintillator, followed by a pulse shape discrimination-capable circuit. Tests were conducted in order to determine the characteristics and li mitations of the employed experimental setup. The deconvolution of the acquired spectra was performed using the DIFBAS computer code. The algorithm is based on the Bayesian conditional probability , while the covariance filter method was employed to calculate the a posteriori neutron flux spectrum along w ith its covariance matrix. The produced neutron beam proved to be practically monoenergetic for low energy deuterons, while at higher deuteron beam energies, the strong presence of parasitic and scattered neutrons was revealed .
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d4a27e89f5d5e7a2fef6cf729efa8148 https://doi.org/10.12681/hnps.2996 Zobrazit plný text záznamu