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Method for reducing the coupling during reception between excitation and receive coils of a nuclear quadrupole resonance detection system

  • US 7,710,116 B2
  • Filed: 10/30/2007
  • Issued: 05/04/2010
  • Est. Priority Date: 12/03/2004
  • Status: Expired due to Fees
First Claim
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1. A method of detecting a nuclear quadrupole resonance (NQR) signal from a sample at an NQR frequency, the method comprising:

  • exciting the sample at an excitation frequency using an excitation coil, the excitation coil having a resonance frequency;

    receiving the NQR signal from the sample using a receive coil, the receive coil being a high-temperature superconductor (HTS) receive coil, the receive coil and the excitation coil being different coils; and

    upon completion of the excitation, shifting the resonance frequency of the excitation coil while receiving the NQR signal from the sample using the receive coil,so as to detect the NQR signal from the sample with reduced coupling between the excitation coil and the receive coil.

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