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All Journal Ganendra: Majalah IPTEK Nuklir
Jungho Kim
Korean Research Institute of Standards and Science-Korea
Computer Science & IT Other

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NEUTRON RESPONSE FUNCTION OF BONNER SPHERE SPECTROMETER WITH 6LiI(Eu) DETECTOR Rasito Tursinah; Bunawas Bunawas; Jungho Kim
GANENDRA Majalah IPTEK Nuklir Volume 20 Nomor 2 Juli 2017
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (688.18 KB) | DOI: 10.17146/gnd.2017.20.2.3319

Abstract

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%.
Co-Authors Bunawas Bunawas Rasito Tursinah