Patent ID: 7732772

Claim:
A system for detecting explosive materials, comprising: at least one neutron generator module operable to bombard an object with neutrons; at least one gamma ray detector module operable to detect gamma rays emitted by the object in response to the neutrons; and an analysis module operable to analyze the gamma rays detected by the at least one gamma ray detector module for the presence of explosive materials on or within the object; wherein the at least neutron generator module and at least one gamma ray detector module are operable to move in a substantially synchronized manner relative to at least one dimension of the object; wherein the analysis module is operable to analyze the gamma rays detected by the at least one gamma ray detector module for an area with a higher concentration of oxygen; and wherein the analysis module is further operable to analyze the gamma rays detected by the at least one gamma ray detector module for an area with a higher concentration of nitrogen in response to detecting an area with a higher concentration of oxygen.