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Published on: August 17, 2017
Rabi resonance in spin systems: theory and experiment
Kelvin J Layton1, Bahman Tahayori1, Iven M Y Mareels1
1The University of Melbourne, Melbourne, Australia.
Abstract:
The response of a magnetic resonance spin system is predicted and experimentally verified for the particular case of a continuous wave amplitude modulated radiofrequency excitation. The experimental results demonstrate phenomena not previously observed in magnetic resonance systems, including a secondary resonance condition when the amplitude of the excitation equals the modulation frequency. This secondary resonance produces a relatively large steady state magnetisation with Fourier components at harmonics of the modulation frequency. Experiments are in excellent agreement with the theoretical prediction derived from the Bloch equations, which provides a sound theoretical framework for future developments in NMR spectroscopy and imaging.
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