WJNST  Vol.1 No.3 , October 2011
Tensioned Metastable Fluid Detectors in Nuclear Security for Active Interrogation of Special Nuclear Materials―Part B
ABSTRACT
This paper (constituting Part B) addresses active interrogation for detecting Special Nuclear Materials (SN- Ms) and includes description of the transformational Tensioned Metastable Fluid Detector (TMFD) based method for optimal monitoring. One of the greatest difficulties in detection of SNMs by active interrogation is the task of distinguishing between the probing particles and the secondary particles that indicate the presence of SNMs. The TMFD’s selective insensitivity and γ photon blindness features are advantageous for alleviating this problem. The working principle of the TMFD is discussed along with its applications for security. The experimental work to date involving detection of small quantities of uranium with conventional detectors is discussed along with results of fission neutron detection. Statistically significant detection was achieved within 5 minutes of counting to ascertain and measure conclusive evidence for the presence of a 55g sample of uranium containing < 0.1g of 235U. Results of simulations of three active detection techniques utilizing a TMFD system are presented. The process for using the TMFD to discriminate active source particles using timing and energy are described. These simulations indicate that it should be possible to utilize the TMFD system for optimal neutron-based interrogation of SNMs.

Cite this paper
nullJ. Webster and R. Taleyarkhan, "Tensioned Metastable Fluid Detectors in Nuclear Security for Active Interrogation of Special Nuclear Materials―Part B," World Journal of Nuclear Science and Technology, Vol. 1 No. 3, 2011, pp. 66-76. doi: 10.4236/wjnst.2011.13011.
References
[1]   R. P. Taleyarkhan, J. Lapinskas and Y. Xu, “Tensioned Metastable Fluids and Nanoscale Interactions with Exter- nal Stimuli-Theoretical-Cum-Experimental Assessments and Nuclear Engineering Applications,” Nuclear Engineering and Design, Vol. 238, No. 7, 2008, pp. 1820- 1827. doi:10.1016/j.nucengdes.2007.10.019

[2]   W. L. Myers, et al., “Photon and Neutron Active Interro- gation of Highly Enriched Uranium,” Americal Institute of Physics Conference Proceedings, Vol. 769, 2005, pp. 1688-1692.

[3]   B. Archambault, et al., “Transformational Nuclear Sensors-Real-Time Monitoring of WMDs, Risk Assessment & Response,” IEEE, 2010, pp. 421-427.

[4]   A. Sansone, et al., “Gamma-Blind Nuclear Particle-In- duced Bubble Formation in Tensioned Metastable Fluids,” Proceedings of 2011 Annual American Nuclear Society Annual Conference, Hollywood, USA, June 2011, p. 1033.

[5]   J. Lapinskas, et al., “Tension Metastable Fluid Detection Systems for Special Nuclear Material Detection and Monitoring,” Nuclear Engineering and Design, Vol. 240, No. 10, 2010, pp. 2866-2871. doi:10.1016/j.nucengdes.2010.05.058

[6]   R. P. Taleyarkhan, et al., “Evidence of Nuclear Emissions during Acoustic Cavitation,” Science, Vol. 295, No. 5561, 2002, pp. 1868-1873. doi:10.1126/science.1067589

[7]   C. A. Hagmann, et al., “Active Detection of Shielded SNM with 60-keV Neutrons,” IEEE Transactions on Nuclear Science, Vol. 56, No. 3, 2009, pp. 1215-1217. doi:10.1109/TNS.2009.2012859

[8]   E. Padovani and S. Pozzi, “MCNP-PoliMi version 1.0,” Department of Nuclear Engineering, Polytechnic of Milan, Milan, 2002.

[9]   J. R. Lapinskas, “Tension Metastable Fliud Detector for Real-Time Detection of Actinides and Extension to Monitoring of UREX+ Process Streams,” Ph.D. Thesis, Purdue University, West Lafayette, 2010.

[10]   X-5 Monte Carlo Team, “MCNP―A General Monte Carlo N-Particle Transport Code, Version 5,” Los Alamos National Lab, Los Alamos, 2005.

 
 
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