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METHOD AND APPARATUS FOR SENSING THE PRESENCE OF EXPLOSIVES, CONTRABAND AND OTHER MOLECULES USING NUCLEAR QUADRUPOLE RESONANCE

  • US 20110187363A1
  • Filed: 12/01/2010
  • Published: 08/04/2011
  • Est. Priority Date: 01/29/2010
  • Status: Active Grant
First Claim
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1. A method for performing a nuclear quadrupole resonance measurement on a material, comprising the steps of:

  • placing a target material between the elements of a balanced transmission line terminated with a resistive element equal to the impedance of the balanced transmission line;

    driving the transmission line through a circulator with a signal having a frequency equal to that of one of the spectral lines of the target material; and

    ,detecting the stimulated emission from the target material from an output of the circulator, whereby interference between the drive signal for the transmission line and the received signal from the transmission line is minimized.

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