US Patent:
20130285657, Oct 31, 2013
Inventors:
Andrei N. Matlashov - Los Alamos NM, US
Larry J. Schultz - Los Alamos NM, US
Petr L. Volegov - Los Alamos NM, US
Algis Urbaitis - Albuquerque NM, US
Henrik Sandin - Los Alamos NM, US
Jacob Yoder - Los Alamos NM, US
Stephen Surko - Chevy Chase MD, US
International Classification:
G01R 33/44
Abstract:
Methods for determining the identity of a substance are provided. A classification parameter set is defined to allow identification of substances that previously could not be identified or to allow identification of substances with a higher degree of confidence. The classification parameter set may include at least one of relative nuclear susceptibility (RNS) or an x-ray linear attenuation coefficient (LAC). RNS represents the density of hydrogen nuclei present in a substance relative to the density of hydrogen nuclei present in water. The extended classification parameter set may include T, T, and/or Tas well as at least one additional classification parameter comprising one of RNS or LAC. Values obtained for additional classification parameters as well as values obtained for T, T, and Tcan be compared to known classification parameter values to determine whether a particular substance is a known material.