Btg International Limited

British Technology Group Limited

Martin Blanz

John Alec Smith

Michael David Rowe

Julian D Shaw

Neil Francis Peirson

John Alec Sydney Smith

John Alec Sidney Smith

A method of detecting the presence of a particular substance in a given sample. According to the method, nuclear resonance is excited in a substance and response signals are detected from the substance using a probe. The probe is adjusted in dependence on the character of the sample. A method of detecting the presence of a sample which gives rise to interfering signals, not due to nuclear resonance, comprises exciting nuclear resonance in the sample, and detecting and processing the response signal from the sample in such a way as to at least partially filter out the interfering signals arising from the sample.

Method of and apparatus for testing a sample

A method of Nuclear Quadrupole Resonance testing a sample containing a given species of quadrupolar nucleus, the sample being subjected to an inhomogeneous distribution of an extrinsic parameter having a variation over the sample over a particular range, comprises applying excitation to the sample at a plurality of different excitation frequencies to excite nuclear quadrupole resonance, such frequencies falling within the resonance frequency range for the nucleus corresponding to the range of the extrinsic parameter, and detecting the resonance response signal.

Method of nuclear quadrupole resonance testing and method of configuring apparatus for nuclear quadrupole resonance testing

Method of nuclear quadrupole resonance testing and method of configuring

Apparatus for and method of nuclear resonance testing

Methods and apparatus for NQR testing

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Culham, United Kingdom

Martin Blanz