Open AccessNEUTRON RESPONSE FUNCTION OF BONNER SPHERE SPECTROMETER WITH 6LiI(Eu) DETECTOR
Author(s) -
Rasito Tursinah,
Bunawas Bunawas,
Jungho Kim
Publication year - 2017
Publication title -
ganendra
Language(s) - English
Resource type - Journals
eISSN - 2503-5029
pISSN - 1410-6957
DOI - 10.17146/gnd.2017.20.2.3319
Subject(s) - bonner sphere , spectrometer , detector , physics , neutron , nuclear physics , scintillator , neutron temperature , neutron detection , monte carlo method , energy (signal processing) , liquid scintillation counting , function (biology) , computational physics , neutron cross section , optics , chemistry , radiochemistry , mathematics , statistics , quantum mechanics , evolutionary biology , biology
Neutron Response Function of Bonner Sphere Spectrometer With 6LiI(Eu) Detector. The detector response function was needed to measure the neutron fluence based on the count rates from Bonner Sphere Spectrometer (BSS). The determination of response function of a BSS with 6LiI(Eu) detector has been performed using Monte Carlo MCNPX code. This calculation was performed for BSS using scintillation detector of 4 mm × 4 mm 6LiI(Eu) which is placed at the center of a set of polyethylene spheres i.e bare, 2", 3", 5", 8", 10", and 12" diameters. The BSS response functions were obtained for neutron energy of 1x10-9 MeV - 1x102 MeV in 111 energy bins and each value has an uncertainty less or equal to 2 %. The response function were compared with two response functions reported in the literature i.e IAEA document in Technical Reports Series 403 (TRS-403) and the calculation from Vega-Carrillo, et al. Also validated with measurement 252Cf neutron spectra, that shown the simulated BSS spectra were quite close to the experimental measured with a differrence of 3%.