Abstract
TORREY1 has discussed the possibilities of using a relatively rapid approach to resonant conditions as a method of searching for unknown nuclear resonances, and has described methods in which H 1 (the radio-frequency field) has been pulsed. Where the establishment of resonance conditions is rapid compared with the spin-lattice relaxation time, this method gives theoretically a larger nuclear signal than that available in cases where the resonance is excited continuously or frequently. We have found that a method whereby H 1 is fixed and H 0 (the D.c. magnetic field) is rapidly swept over a relatively wide range provides not only a simple method of demonstrating nuclear resonance effects, but also one that has possibilities in rapid searching for unknown resonances.
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References
Torrey, H. C., Phys. Rev., 76, 1059 (1949).
Bloch, F., Phys. Rev., 70, 460 (1946).
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TAYLOR, K. A Rapid Method of obtaining Nuclear Magnetic Resonance Spectrograms. Nature 172, 722–723 (1953). https://doi.org/10.1038/172722a0
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DOI: https://doi.org/10.1038/172722a0
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