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US 5,491,414 AGranted
Method of nuclear quadrupole resonance testing of integral spin quantum number systems
AssigneeBritish Technology Group Limited
InventorsJohn A. S. Smith, Julian D. Shaw
Life of this patent
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Abstract
A method of Nuclear Quadrupole Resonance testing includes the steps of applying to a sample in which selected nuclei have an integral spin quantum number a series of at least three pulses of electromagnetic waves at a single radiofrequency to excite quadrupole resonance of the selected nuclei, and detecting responses at a plurality of times when echo response signals are expected to occur.
Claims13
A method of NQR testing which includes the steps of:
- applying to a sample in which selected nuclei have an integral spin quantum number, a series of at least three excitation pulses of electromagnetic waves at a single radiofrequency to excite quadrupole resonance in said selected nuclei;
- and
- detecting echo response signals from said sample at a plurality of times;
- said series of at least three excitation pulses being arranged in time to generate a greater number of said echo response signals in a predetermined substance than a number of said at least three excitation pulses.
1 more element
A method of NQR testing which includes the steps of:
- applying to a sample in which selected nuclei have an integral spin quantum number, a series of at least three excitation pulses of electromagnetic waves at a single radiofrequency to excite quadrupole resonance in said selected nuclei;
- and
- determining a plurality of times when echo response signals are expected to occur in said sample;
- detecting echo response signals from said sample at said plurality of times when echo response signals are expected to occur;
- said series of at least three excitation pulses being arranged in time to generate a greater number of said echo response signals in a predetermined substance than a number of said at least three excitation pulses.
2 more elements
Dependencies are inferred from the claim text.