Application of gamma-ray spectrometry, neutron multiplicity counting and calorimetry for non-destructive assay of U–Pu mixed samples

2021 ◽  
pp. 109891
Author(s):  
Sabyasachi Patra ◽  
Rahul Tripathi ◽  
P.K. Pujari
Keyword(s):  
Gamma Ray ◽  
Neutron Multiplicity ◽  
Gamma Ray Spectrometry ◽  
Non Destructive ◽  
Mixed Samples ◽  
And Calorimetry

Application research on neutron-gamma discrimination based on BC501A liquid scintillator

Kerntechnik ◽  
2021 ◽  
Vol 86 (6) ◽  
pp. 437-444
Author(s):  
J. Luo ◽  
S. Hou
Keyword(s):  
Fast Neutron ◽  
Figure Of Merit ◽  
Gamma Ray ◽  
Liquid Scintillator ◽  
Comparison Method ◽  
Mean Value ◽  
Neutron Multiplicity ◽  
Nuclear Disarmament ◽  
Zero Crossing ◽  
Non Destructive

Abstract Liquid organic scintillators are widely used in non-destructive analysis, which plays an important role in nuclear disarmament verification. This paper focused on studying the neutron-gamma discrimination technology in the fast neutron multiplicity measuring counter based on BC501A liquid scintillation detector. First, the charge comparison method, the zero-crossing time method and the rise time method were compared via the Geant4 and Matlab algorithm, and the result shows that charge comparison has the highest Figure of Merit. Then, a neutron-gamma discrimination system based on the six-probe fast neutron multiplicity counter was built and tested with a conclusion that the mean value of Figure of merit is 1.08, which verify the satisfactory neutron-gamma discriminating capability of the system. Finally, for the uranium samples, the mass are detected by fast neutron multiplicity counter, and the enrichment are measured by the characteristic gamma-ray signals using the system. The experimental results are in good agreement with the actual data.

scholarly journals 226Ra/238U Dates by Non-Destructive .GAMMA.-ray Spectrometry of Late Pleistocene Corals in Minami-and Kita-Daito Islands,Okinawa, Japan.

1991 ◽  
Vol 100 (3) ◽  
pp. 367-377 ◽  
Author(s):  
Toshio KAWANA ◽  
Hatsuo TAIRA ◽  
Akira TANAHARA ◽  
Hiroshige AOKI ◽  
Yoko OTA ◽  
...  
Keyword(s):  
Late Pleistocene ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Non Destructive

Non destructive and destructive dating by low energy gamma ray spectrometry

1995 ◽  
Vol 46 (6-7) ◽  
pp. 651-652
Author(s):  
M. Berrada ◽  
A. Choukri ◽  
T. El Khoukhi
Keyword(s):  
Gamma Ray ◽  
Low Energy ◽  
Gamma Ray Spectrometry ◽  
Energy Gamma ◽  
Non Destructive

Facility for non-destructive analysis for major and trace elements using neutron-capture gamma-ray spectrometry

1981 ◽  
Vol 63 (1) ◽  
pp. 97-119 ◽  
Author(s):  
D. L. Anderson ◽  
M. P. Failey ◽  
W. H. Zoller ◽  
W. B. Walters ◽  
G. E. Gordon ◽  
...  
Keyword(s):  
Trace Elements ◽  
Neutron Capture ◽  
Gamma Ray ◽  
Major And Trace Elements ◽  
Gamma Ray Spectrometry ◽  
Destructive Analysis ◽  
Non Destructive

scholarly journals Determining radium-226 concentration from radon-222 emanation in building materials: a theoretical model

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Rafael Carvalho Barreto ◽  
Allan F. N. Perna ◽  
Danielle C. Narloch ◽  
Flavia Del Claro ◽  
Janine N. Correa ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Building Material ◽  
Nuclear Physics ◽  
Building Materials ◽  
Gamma Ray ◽  
Cement Mortar ◽  
One Dimension ◽  
Gamma Ray Spectrometry ◽  
Direct Measurements ◽  
Non Destructive

It was developed an improved theoretical model capable to estimate the radium concentration in building materials solely measuring the radon-222 concentration in a confined atmosphere.This non-destructive technique is not limited by the size of the samples, and it intrinsically includes back diffusion.The resulting equation provides the exact solution for the concentration of radon-222 as a function of time and distance in one dimension.The effective concentration of radium-226 is a fit parameter of this equation.In order to reduce its complexity, this equation was simplified considering two cases:low diffusion in the building material compared to the air, anda building material initially saturated with radon-222.These simplified versions of the exact one dimension solution were used to fit experimental data.Radon-222 concentration was continuously measured for twelve days with an AlphaGUARD detector, located at the Laboratory of Applied Nuclear Physics at Universidade Tecnologica Federal do Parana (UTFPR).This model was applied to two different materials: cement mortar and concrete, which results were respectively (15.7 +- 8.3) Bq/kg and (10.5 +- 2.4) Bq/kg for the radium-226 effective concentration.This estimation was confronted with the direct measurements of radium in the same materials (same sources) using gamma-ray spectrometry, fulfilled at Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), which results were respectively (13.81 +- 0.23) Bq/kg and (12.61 +- 0.22) Bq/kg.

Non-Destructive Gamma-Ray Spectrometry on Spent Fuels of a Boiling Water Reactor

1975 ◽  
Vol 12 (1) ◽  
pp. 24-34 ◽  
Author(s):  
Shojiro MATSUURA ◽  
Harumichi TSURUTA ◽  
Takenori SUZAKI ◽  
Hiroshi OKASHITA ◽  
Hirokazu UMEZAWA ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Boiling Water ◽  
Boiling Water Reactor ◽  
Gamma Ray Spectrometry ◽  
Water Reactor ◽  
Non Destructive
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