Apparatus for and method of nuclear quadrupole resonance testing

Electricity: measuring and testing – Particle precession resonance

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324309, G01V 300

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ABSTRACT:
Apparatus for Nuclear Quadrupole Resonance testing a remote sample containing a given species of quadrupolar nucleus includes at least one probe (112) having a given maximum cross-sectional dimension; a device (102) for applying excitation to the probe or at least one of the probes to excite nuclear quadruple resonance for a selected range of distance of the sample from each such probe, the selected range being at least one tenth of the given maximum dimension of the probe, the apparatus being adapted to produce a non-uniform field over the selected range; and a device (106) for detecting the resonance response signal from the sample via the probe or at least one of the probes; the excitation being such as would generate non-zero resonance signals at all distances within the selected range.

REFERENCES:
patent: 5814987 (1998-09-01), Smith et al.
patent: 5814989 (1998-09-01), Smith et al.
Gonano, "Nuclear Magnetic Resonance and Nuclear Quadrupole Resonance for Bomb Detection", Electro Conference Record, 4, Apr. 1979, pp. 1-5.
Ageev, et al., "Composite pulses in nuclear quadrupole resonance", Molecular Physics 1994, vol. 83, No. 2, pp. 193-210.
Tannus, et al., "Improved Performance of Frequency-Swept Pulses Using Offset-Independent Adiabaticity", Journal of Magnetic Resonance, Series A 120, 1996, pp. 133-137.
Grechishkin, "NQR Device for Detecting Plastic Explosives, Mines, and Drugs", Applied Physics A 55, 1992, pp. 505-507.
Grechishkin, et al., "Adiabatic Demagnetization and Two-Frequency Methods in .sup.14 N Quadrupole Resonance Spectroscopy", Advances in Nuclear Quadrupole Resonance, vol. 5, 1983, pp. 1-13.
Buess, et al., "NQR Detection Using a Meanderline Surface Coil", Journal of Magnetic Resonance 92, 1991, pp. 348-362.
Hischfeld, et al., "Short Range Remote NQR Measurements", Journal of Molecular Structure, 58, 1980, pp. 63-77.
Garwood, et al., "B.sub.1 Insensitive Adiabatic RF Pulses", NMR Basic Principles and Progress, vol. 26, 1992, pp. 109-147.
Vega, "Theory of T.sub.1 relaxation measurements in pure nuclear quadrupole resonance for spins / =1", The Journal of Chemical Physics, vol. 61, No. 3; Aug. 1, 1974, pp. 1093-1100.
Bosch, et al., "Surface Coli Spectroscopy", NMR Basic Principles and Progress, vol. 27, 1992, pp. 4-44.
Rommel, et al., "Spectroscopic rotating-frame NQR imaging (pNQRI) using surface cells", Measurement Science & Technology 2, No. 9, Sep. 1991, pp. 866-871.
Jach, T. "Detection of nuclear quadrupole resonance via induced longitudinal magnetization", Applied Physics Letters, vol. 28, No. 1, Jan. 1, 1976, pp. 49-51.

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