Blanz Martin

Nuclear quadrupole resonance spectroscopy

A method of detecting the presence of a given quadrupolar nucleus in a sample, the resonance frequency and spin-lattice relaxation time of the nucleus varying with a given environmental parameter, comprises determining a range of the resonance frequency which corresponds to a selected range of the parameter, applying excitation to the sample to excite nuclear quadrupole resonance, and detecting the resonance response signal, the excitation being such that a detectable resonance response signal can be excited over the resonance frequency range, and being such as to produce a constant flip angle of less than 45 degrees actual.