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Title: Active Neutron Interrogation of Non-Radiological Materials with NMIS

Abstract

The Nuclear Materials Identification System (NMIS) at Oak Ridge National Laboratory (ORNL), although primarily designed for analyzing special nuclear material, is capable of identifying nonradiological materials with a wide range of measurement techniques. This report demonstrates four different measurement methods, complementary to fast-neutron imaging, which can be used for material identification: DT transmission, DT scattering, californium transmission, and active time-tagged gamma spectroscopy. Each of the four techniques was used to evaluate how these methods can be used to identify four materials: aluminum, polyethylene, graphite, and G-10 epoxy. While such measurements have been performed individually in the past, in this project, all four measurements were performed on the same set of materials. The results of these measurements agree well with predicted results. In particular, the results of the active gamma spectroscopy measurements demonstrate the technique's applicability in a future version of NMIS which will incorporate passive and active gamma-ray spectroscopy. This system, designated as a fieldable NMIS (FNMIS), is under development by the US Department of Energy Office of Nuclear Verification.

Authors:
 [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1035833
Report Number(s):
ORNL/TM-2012/77
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Walker, Mark E, and Mihalczo, John T. Active Neutron Interrogation of Non-Radiological Materials with NMIS. United States: N. p., 2012. Web. doi:10.2172/1035833.
Walker, Mark E, & Mihalczo, John T. Active Neutron Interrogation of Non-Radiological Materials with NMIS. United States. doi:10.2172/1035833.
Walker, Mark E, and Mihalczo, John T. Wed . "Active Neutron Interrogation of Non-Radiological Materials with NMIS". United States. doi:10.2172/1035833. https://www.osti.gov/servlets/purl/1035833.
@article{osti_1035833,
title = {Active Neutron Interrogation of Non-Radiological Materials with NMIS},
author = {Walker, Mark E and Mihalczo, John T},
abstractNote = {The Nuclear Materials Identification System (NMIS) at Oak Ridge National Laboratory (ORNL), although primarily designed for analyzing special nuclear material, is capable of identifying nonradiological materials with a wide range of measurement techniques. This report demonstrates four different measurement methods, complementary to fast-neutron imaging, which can be used for material identification: DT transmission, DT scattering, californium transmission, and active time-tagged gamma spectroscopy. Each of the four techniques was used to evaluate how these methods can be used to identify four materials: aluminum, polyethylene, graphite, and G-10 epoxy. While such measurements have been performed individually in the past, in this project, all four measurements were performed on the same set of materials. The results of these measurements agree well with predicted results. In particular, the results of the active gamma spectroscopy measurements demonstrate the technique's applicability in a future version of NMIS which will incorporate passive and active gamma-ray spectroscopy. This system, designated as a fieldable NMIS (FNMIS), is under development by the US Department of Energy Office of Nuclear Verification.},
doi = {10.2172/1035833},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {2}
}

Technical Report:

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