Rabi resonance in spin systems: theory and experiment.
J Magn Reson
; 242: 136-42, 2014 May.
Article
em En
| MEDLINE
| ID: mdl-24650726
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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MEDLINE
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En
Ano de publicação:
2014
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Article