scholarly journals Calculation of response functions for cylindrical nested neutron spectrometer

2021 ◽  
Vol 7 (3) ◽  
pp. 52-56
Author(s):  
Vu Long Chu ◽  
Huu Quyet Nguyen ◽  
Ngoc Quynh Nguyen ◽  
Ngoc Thiem Le
Keyword(s):  
Thermal Neutron ◽  
Neutron Detector ◽  
Response Functions ◽  
Neutron Spectrometer ◽  
Mcnpx Code ◽  
Bonner Sphere ◽  
Thermal Neutron Detector ◽  
Bonner Sphere Spectrometer ◽  
Different Diameters ◽  
Scintillator Crystal

In a recent work, a new neutron spectrometer, namely Cylindrical Nested Neutron Spectrometer (CNNS). It works under the same principles as a Bonner Sphere Spectrometer (BSS), except that different amounts of moderator around a thermal neutron detector are configured by adding or removing cylindrical shells. The CNNS consists of a 4mm x 4mm 6LiI(Eu) scintillator crystal and nested cylindrical polyethylenemoderators. The objective of this paper is describing the use of MCNPX code for determining a optimal ratio between height and diameter of the moderators in order to remain isotropic angular response to neutrons like BSS and determining of response functions for moderators of different diameters at 104 energy points from 0.001 eV to 19.95 MeV.

scholarly journals NEUTRON RESPONSE FUNCTION OF BONNER SPHERE SPECTROMETER WITH 6LiI(Eu) DETECTOR

2017 ◽  
Vol 20 (2) ◽  
pp. 65 ◽  
Author(s):  
Rasito Tursinah ◽  
Bunawas Bunawas ◽  
Jungho Kim
Keyword(s):  
Monte Carlo ◽  
Response Function ◽  
Neutron Fluence ◽  
Detector Response ◽  
Response Functions ◽  
Neutron Spectra ◽  
Mcnpx Code ◽  
Bonner Sphere ◽  
Bonner Sphere Spectrometer

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%.

Construction of a two-dimensional thermal neutron detector

2009 ◽  
Author(s):  
Xiao-hu Wang ◽  
Yuan-bo Chen ◽  
Huan-yi Sheng ◽  
Yu-bin Zhao ◽  
Hong-yu Zhang ◽  
...  
Keyword(s):  
Thermal Neutron ◽  
Neutron Detector ◽  
Two Dimensional ◽  
Thermal Neutron Detector

/sup 6/LiI(Eu) in neutron and /spl gamma/-ray spectrometry-a highly sensitive thermal neutron detector

2005 ◽  
Vol 52 (6) ◽  
pp. 3151-3156 ◽  
Author(s):  
A. Syntfeld ◽  
M. Moszynski ◽  
R. Arlt ◽  
M. Balcerzyk ◽  
M. Kapusta ◽  
...  
Keyword(s):  
Thermal Neutron ◽  
Neutron Detector ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Highly Sensitive ◽  
Thermal Neutron Detector

Two-dimensional thermal neutron detector

2008 ◽  
Vol 72 (7) ◽  
pp. 1001-1004 ◽  
Author(s):  
V. A. Andreev ◽  
E. A. Ivanov ◽  
D. S. Ilyin ◽  
S. N. Kovalenko ◽  
A. G. Krivshich ◽  
...  
Keyword(s):  
Thermal Neutron ◽  
Neutron Detector ◽  
Two Dimensional ◽  
Thermal Neutron Detector

A new thermal neutron detector for protein crystallography

1999 ◽  
Vol 46 (6) ◽  
pp. 1916-1919 ◽  
Author(s):  
G.J. Mahler ◽  
V. Radeka ◽  
N.A. Schaknowski ◽  
G.C. Smith ◽  
B. Yu ◽  
...  
Keyword(s):  
Thermal Neutron ◽  
Neutron Detector ◽  
Protein Crystallography ◽  
Thermal Neutron Detector

Thermal neutron detector based on COTS CMOS imagers and a conversion layer containing Gadolinium

2018 ◽  
Vol 893 ◽  
pp. 157-163 ◽  
Author(s):  
Martín Pérez ◽  
Juan Jerónimo Blostein ◽  
Fabricio Alcalde Bessia ◽  
Aureliano Tartaglione ◽  
Iván Sidelnik ◽  
...  
Keyword(s):  
Thermal Neutron ◽  
Neutron Detector ◽  
Cmos Imagers ◽  
Thermal Neutron Detector
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