Optimal Broadband Pulse Design with Limited RF Amplitude in Nuclear Magnetic Resonance

Abstract:

In this paper, we introduce an optimal control theory (OCT) based method for design of broadband excitation pulse with limited radio frequency (RF) amplitude in nuclear magnetic resonance (NMR). The capability of the optimized pulse was verified by the following design criteria: the state transfer of 1H fromtoover resonance offsets of, the pulse duration is 1ms with maximum RF amplitude of 10 kHz. The simulation result demonstrates that the optimal control-based shaped pulse is much more adaptable to broadband excitation, providing a better performance than traditional hard pulse.

• Periodical: Applied Mechanics and Materials (Volumes 543-547)
• Pages: 2288-2291
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.543-547.2288
• Online since: March 2014
• Authors: Shu Lin Zhang, Yan Chang, Xiao Dong Yang*
• Keywords: Broadband Excitation, Nuclear Magnetic Resonance (NMR), Optimal Control Theory, Radiofrequency Amplitude Restriction

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