Probe coil for detecting NQR-responsive materials in large...

Electricity: measuring and testing – Particle precession resonance – Spectrometer components

Reexamination Certificate

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Reexamination Certificate

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10534024

ABSTRACT:
A coil assembly (11) comprising two coil sections (13aand13b). Each of the sections (13) consists of a combinat of a spiral coil (15) having a variable coil pitch arranged in a saddle shape configuration. The saddle shape has a central port (17) and a pair of outer coextending portions (19). The coil sections (13) are located opposite each other with the central p(17) of the respective sections disposed in parallel spaced apart relationship and the corresponding coextending portions (19) of respective sections disposed in coplanar alignment with each other so that the sections combine to circumscribe a scanned volume within which the target substance is to be disposed.

REFERENCES:
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patent: 5457385 (1995-10-01), Sydney et al.
patent: 6054855 (2000-04-01), Anderson
patent: 2003/0062896 (2003-04-01), Wong et al.
S.S. Kim et al, “Experimental Investigations of the strong Off-Resonant Comb (SORC) Pulse Sequence in NQR”, Z. Naturforsch, vol. 47a, 1992, pp. 415-420.
Rudakov, T.N. et al., “A System of Coils for Detecting Signals of Nuclear Quadrupole Resonance”, Instruments and Experimental Techniques, vol. 41, 1998, pp. 398-400.
Hirschfeld, T. and Klainer, S.M., “Short Range Remote NQR Measurements”, Journal of Molecular structure, vol. 58, 1980, pp. 63-77.
Rudakov, T.N. et al, “Improvement of the Uniformity of the RF Field Generated by the Helical Surface Coil of a Nuclear-Quadrupole Resonance Spectrometer”, Instruments and Experimental Techniques, vol. 44, No. 1, 2001, pp. 81-83.
Hayes, C.E. et al, “Radio Frequency Resonators”, Magnetic Resonance Imaging, ed by C. L. Partain, R.R. Price, J.A. Patton, M.V. Kulkarni, A.E. James, Saunders, 1988, pp. 1183-1200.

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