Apparatus and methods for locating a nuclear quadrupole resonance are described. In an example method, a search frequency is adjusted using a blind search until a resonance absorption of an analyte is detected, and then an extremum seeking search to be used to locate an extremum frequency.

 
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< Singlet-state exchange NMR spectroscopy for the study of very slow dynamic proceses

> METHOD AND APPARATUS FOR ACQUISITION OF MAGNETIC RESONANCE DATA

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