Comparison of active interrogation methods for source location in a scattering and absorbing medium, consisting of PGNAA, and an AmBe quasi-forward biased directional source.
作者： Kyle M. Paaren , Seth Kilby , Hyoung K. Lee
DOI: 10.1016/J.APRADISO.2020.109107
关键词: Electromagnetic shielding 、 Neutron spectroscopy 、 Semiconductor detector 、 Optics 、 Approximation error 、 Fission 、 Detector 、 Physics 、 Prompt gamma neutron activation analysis 、 Special nuclear material
摘要: ABSRACT Source location of Special Nuclear Material (SNM) encompassing 95% 235U and 239Pu is identified by utilizing a directional source from Patent No: US20190013109A1 using Prompt Gamma Neutron Activation Analysis (PGNAA) neutron spectroscopy simulated with Monte-Carlo N-Particle transport 6.2 (MCNP). BC-408, HPGe, LaBr3 detector arrays were used to identify the SNM total counts incident on each detector, PGNAA photopeaks HPGe in polyethylene shield. The conducted simulations varied volume MCNP input files observe how method behaved. for identification include 61 keV fission, 2.223 MeV prompt gamma hydrogen, 511 keV annihilation, single double escape peaks interaction hydrogen. capabilities systems acquire well resolved 1% relative error or less, F4 F8 tallies less than 0.015% error. predictions uneven amounts shielding between detectors was observed overpredict give invalid predictions. locations even material found be valid. With 1 Ci 241Am activity, it determined that 1630 s needed obtain results system quasi-forward AmBe source. Coupling together would increase acquisition time but only require one determine.
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sci-hub.se 参考文章(20)
R. Vilim, R. Klann, RadTrac : A system for detecting, localizing, and tracking radioactive sources in real time. Nuclear Technology. ,vol. 168, pp. 61- 73 ,(2009) , 10.13182/NT168-61
David V. Jordan, Paul L. Reeder, Matthew W. Cooper, Kathleen R. McCormick, Anthony J. Peurrung, Glen A. Warren, Methods and Instruments for Fast Neutron Detection Pacific Northwest National Laboratory (U.S.). ,(2005) , 10.2172/1018168
Nageswara S.V. Rao, Satyabrata Sen, Nicholas J. Prins, Daniel A. Cooper, Robert J. Ledoux, James B. Costales, Krzysztof Kamieniecki, Steven E. Korbly, Jeffrey K. Thompson, James Batcheler, Richard R. Brooks, Chase Q. Wu, Network algorithms for detection of radiation sources Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment. ,vol. 784, pp. 326- 331 ,(2015) , 10.1016/J.NIMA.2015.01.037
R.M. Lindstrom, Prompt-Gamma Activation Analysis. Journal of Research of the National Institute of Standards and Technology. ,vol. 98, pp. 127- 133 ,(1993) , 10.6028/JRES.098.009
Serkan Akkoyun, A method for determination of gamma-ray direction in space Acta Astronautica. ,vol. 87, pp. 147- 152 ,(2013) , 10.1016/J.ACTAASTRO.2013.02.012
E. Eftekhari Zadeh, S. A. H. Feghhi, E. Bayat, G. H. Roshani, Gaussian Energy Broadening Function of an HPGe Detector in the Range of 40 keV to 1.46 MeV Journal of Experimental Physics. ,vol. 2014, pp. 1- 4 ,(2014) , 10.1155/2014/623683
Jong-In Byun, Hee-Yeoul Choi, Ju-Yong Yun, A 4-point in-situ method to locate a discrete gamma-ray source in 3-D space. Applied Radiation and Isotopes. ,vol. 68, pp. 370- 377 ,(2010) , 10.1016/J.APRADISO.2009.10.054
James W. Howse, Lawrence O. Ticknor, Kenneth R. Muske, Least squares estimation techniques for position tracking of radioactive sources Automatica. ,vol. 37, pp. 1727- 1737 ,(2001) , 10.1016/S0005-1098(01)00134-0
H. Schau, A. Robinson, Passive source localization employing intersecting spherical surfaces from time-of-arrival differences IEEE Transactions on Acoustics, Speech, and Signal Processing. ,vol. 35, pp. 1223- 1225 ,(1987) , 10.1109/TASSP.1987.1165266
D.L. Chichester, E.H. Seabury, Addressing different active neutron interrogation signatures from fissionable material ieee nuclear science symposium. pp. 956- 960 ,(2009) , 10.1109/NSSMIC.2009.5402466