NQR methods and apparatus
作者： John Alec Sydney Smith , Julian David Shaw
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摘要: A method for detecting the presence within a larger article of specific substance containing quadrupolar atomic nuclei includes performing tests parts by placing adjacent to an array coils (10), energizing with rf source (20) (10) in periods cyclic sequence irradiate pulses one or more frequencies at close resonant frequency be detected, connecting other phase-sensitive and measuring circuit (15, 24-26) measure response signals due nuclear quadrupole resonances, summing detected corresponding instants over number sequences. Apparatus analogous above is also disclosed.
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