Methods and apparatus for nqr testing

G - Physics – 01 – N

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G01N 24/08 (2006.01) G01R 33/38 (2006.01) G01R 33/44 (2006.01)

Patent

CA 2110580

2110580 9221989 PCTABS00018 A method fo imaging within a sample space an object containing quadrupolar nuclei comprises irradiating the object to excite nuclear quadrupole resonance, applying to the object a magnetic field gradient having a profile (Bo(x)) such that the square of the profile ((Bo(x))2) varies linearly with distance (x), detecting resonance response signals from the nuclei, and deriving an image from the response signals (see Figures 1 to 7). An analogous apparatus is also disclosed. A method of and apparatus for nuclear quadrupole resonance testing an object, and a method of and apparatus for detecting the presence of a particular substance containing a given species of quadrupolar nucleus, are also disclosed (see Figures 7 and 8).

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