Patent ID: 7408171

Claim:
A method for providing information on the dispersion of a radioactive material within a matrix, the method comprising: measuring emissions of a first energy, the emissions including emissions of a first type, to provide a first type value, the emissions of the first type being K x-ray emissions from uranium, the first energy being at least one energy selected from the group consisting of 94.66 keV, 98.44 keV, 110.43 keV, 111.31 keV, 114.34 keV and 114.57 keV; measuring emissions of a second energy, the emissions including emissions of a second type, to provide a second type value; measuring emissions of a third energy, the emissions including emissions of a third type, to provide a third type value; the interrelationship of the values for the first type value, second type value and third type value providing information on the dispersion of the radioactive material within the matrix.