Pulse sequences for exciting nuclear quadrupole resonance

Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system

Reexamination Certificate

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C324S307000

Reexamination Certificate

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11016728

ABSTRACT:
An apparatus and method for producing a multi-pulse sequence for irradiating a substance provided with quadrupole nuclei with either integer or half-integer spins to detect an NQR signal emitted therefrom. The apparatus has pulse sequence generating means adapted to produce multi-pulse sequences with pulse intervals exceeding T2* and containing a preparatory pulse or group of pulses for creating echo signals between the pulses. The pulse sequence is organised so that the resulting signal contains a prevailing echo component produced by the preparatory pulse or group of pulses.

REFERENCES:
patent: 5233300 (1993-08-01), Buess et al.
patent: 5365171 (1994-11-01), Buess et al.
patent: 5608321 (1997-03-01), Garroway et al.
patent: 6127824 (2000-10-01), Sydney Smith et al.
patent: 6208136 (2001-03-01), Smith et al.
patent: 6392408 (2002-05-01), Barrall et al.
patent: 6577128 (2003-06-01), Smith et al.
patent: 2 200 462 (1988-08-01), None
patent: 2 255 414 (1992-11-01), None
patent: 2 255 414 (1992-11-01), None
patent: 2 338 787 (1999-12-01), None
patent: 1824559 (1993-06-01), None
patent: 1831680 (1993-07-01), None
patent: WO92/17794 (1992-10-01), None
patent: WO 92/17794 (1992-10-01), None
patent: WO 93/11441 (1993-06-01), None
patent: WO93/11441 (1993-06-01), None
patent: WO96/26453 (1996-08-01), None
patent: WO 96/26453 (1996-08-01), None
patent: WO 99/19740 (1999-04-01), None
patent: WO99/19740 (1999-04-01), None
Bushong, S.C., “Magnetic Resonance Imaging Physical and Biological Principles,” Mosby-Year Book Inc, St. Louis, Missouri, 1996, pp. 74-80.
Puddephat, M.P., “Principles of Magnetic Resonance Imaging,” posted Dec. 21, 2002.
Flexman et al., “The Detection of Explosives in Airport Luggage Using the Direct Nuclear Quadrupole Resonance Method,” Detection of Bulk Explosives Advanced Techniques Against Terrorism, Proceedings of the NATO Advanced Research Workshop, held in St. Petersburg, Russia, Jun. 16-21, 2003, Series: NATO Science Series II: Mathematics, Physics and Chemistry, Schubert, Hiltmar; Kuznetsov, Andrey (eds.), vol. 138, 2004, pp. 113-124.
Garroway et al., “Explosives Detection by Nuclear Quadrupole Resonance (NQR),” SPIE, vol. 2276, 1994, pp. 139-149.
Garroway et al., “Narcotics and Explosives Detection by14N Pure NQR,” SPIE, vol. 2092, 1993, pp. 318-327.
Chen and Slichter, “Zero-Field NMR Study on a Spin-Glass: Iron-Doped 2H-Niobium Diselenide,” Physical Review B, vol. 27, No. 1, Jan. 1, 1983, pp. 278-292.
Vega et al., “Cu Nuclear Quadrupole Resonance of YBa2Cu3OxWith Varying Oxygen Content,” Physical Review B, vol. 39, No. 4, 1989, pp. 2322-2332.
Kreis et al, “Low Frequency Pulse Excitation in Zero Field Magnetic Resonance,” Journal of Chemical Physics, vol. 89, No. 11, 1988, pp. 6623-6635.
Erickson, Optically Detected Multipulse Nuclear-Quadrupole-Resonance Studies of Trivalent Praseodymium in Zero and Weak Static Magnetic Fields, Physical Review B, vol. 39, No. 10, Apr. 1989, pp. 6342-6347.
Singh and Armstrong, “Spin Thermodynamics Applied to Pure Nuclear Quadrupole Resonance for an Inhomogeneously Broadband Line in a Spin-3/2 System,” Journal of Physics C: Solid State Physics, vol. 19, 1986, pp. L221-L227.
Bai et al., “Zeeman-Perturbed Spin-Echo FT NQR Spectroscopy,” Journal of Magnetic Resonance Series A, vol. 102, 1993, pp. 137-143.
Shastri et al., “Distribution of Non-equivalent Aluminium Sites Revealed in Al-Cu-Ru and Al-Cu-Fe Quasicrystals by27Al NQR,” Physical Review B, vol. 50, No. 6, Aug. 1, 1994, pp. 4224-4227.
Nickel and Kimmich, “2D Exchange NQR Spectroscopy,” Journal of Molecular Structure, vol. 345, 1995, pp. 253-264.
Kohori et al., “27Al NMR and NQR Studies of the Antiferromagnetic Superconductor UPd2Al3,” Solid State Communications, vol. 95, No. 2, 1995, pp. 121-126.
Peterson and Oja, “A Pusled Nuclear Quadrupole Resonance Spectrometer,” Advances in Nuclear Quadrupole Resonance, vol. 1, ed. J. A. S. Smith (London: Heyden), 1974, pp. 179-184.
Ramachandran and Narasimhan, “A Coherent Nuclear Quadrupole Pulse and Double Resonance Spectrometer,” Journal of Physics E: Scientific Instruments, vol. 16, 1983, pp. 643-648.
Harding et al., “A Pulsed NQR-FFT Spectrometer for Nitrogen-14,” Journal fo Magnetic Resonance, vol. 36, 1979, pp. 21-33.
Hirshfeld and Klainer, “Short Range Remote NQR Measurements,” Journal of Molecular Structure, vol. 58, 1980, pp. 63-77.
Grechiskin, “NQR Device for Detecting Plastic Explosives, Mines and Drugs,” Applied Physics A, vol. 55, 1992, pp. 505-507.
Grechishkin and Sinyavskii, “Remote Nuclear Quadrupole Resonance in Solids,” Physics—Uspekhi, vol. 38, No. 10, 1993, pp. 980-1003.
Grechishkin, “Application of Multipulse Sequences in Remote NQR,” Applied Physics A, vol. 58, 1994, pp. 63-65.
Klainer et al., “Fourier Transform Nuclear Resonance Spectroscopy,” in “Fourier, Hadamard and Hilbert Transforms in Chemistry,” A. G. Marshall, ed., Plenum, New York, 1982, pp. 147-182.
Hitrin et al., “Pulsed Spin Locking Theory in Pure Quadrupole Resonance,” Journal of Molecular Structure, vol. 83, No. 1-2, 1982, pp. 269-275.
Maricq, “Quasistationary State and Its Decay to Equilibrium in the Pulsed Spin Locking of a Nuclear Quadrupole Resonance,” Physical Review B, vol. 33, No. 7, Apr. 1, 1986, pp. 4501-4513.
Marino and Klainer, “Multiple Spin Echoes in Pure Quadrupole Resonance,” Journal of Chemical Physics, vol. 67, No. 7, 1977, pp. 3388-3389.
Osokin et al., “The Quasistationary States in Multipulse NQR,” Z. Naturforsch, vol. 47a, 1992, pp. 439-445.
Bradford et al., “A Steady-State Transient Technique in Nuclear Induction,” Physical Review, vol. 84, No. 1, 1951, pp. 157-158.
Carr, “Steady-State Free Precession in Nuclear Magnetic Resonance,” Physical Review, vol. 112, No. 5, 1958, pp. 1693-1701.
Erofeev et al., “Relaxation of Nuclear Magnetization Under Many-Pulse NMR Experimental Conditions,” Sov. Phys. JETP, vol. 48, No. 5, 1978, pp. 925-930.
Ivanov et al., “Thermodynamics Theory of Narrowing of NMR Spectral Lines in Solids,” Sov. Phys. JETP, vol. 48, No. 5, 1978, pp. 930-936.
Ernst and Anderson, “Application of Fourier Transform Spectroscopy to Magnetic Resonance,” Rev. Sci. Instr., vol. 37, No. 1, 1966, pp. 93-102.
Decorps et al., “An Inductively Coupled, Series-Tuned NMR Probe,” Journal of Magnetic Resonance, vol. 65, 1985, pp. 100-109.
Suits et al., “Super-Q Detection of Transient Magnetic Resonance Signals,” Journal of Magnetic Resonance, vol. 132, 1998, pp. 54-64.
Rudakov et al., “Damping of Transients in an Excited Circuit of an NQR Spectrometer,” Instruments and Experimental Techniques, vol. 38, No. 6, Part 1, 1995, pp. 744-745.
Hoult, “Fast Recovery, High Sensitivity NMR Probe and Preamplifier for Low Frequencies,” The Review of Scientific Instruments, vol. 50, No. (2), Feb. 1979, pp. 193-200.
Conradi, “FET Q Switch of rPulsed NMR,” The Review of Scientific Instruments, vol. 48, No. 3, Mar. 1977, pp. 359-361.
Samuelson et al.; “Self-Switching Damping Circuit for Reducing Transmitter Ringdown Time in High Power Pulse NMR,” The Review of Scientific Instruments, vol. 41, No. 11, Nov. 1970, pp. 1601-1603.

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