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American Institute of Physics, The Journal of Chemical Physics, 23(134), p. 234504

DOI: 10.1063/1.3600758

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Uniform saturation of a strongly coupled spin system by two-frequency irradiation

Journal article published in 2011 by Jae-Seung Lee, Anatoly K. Khitrin, Ravinder R. Regatte ORCID, Alexej Jerschow
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This paper is available in a repository.

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Abstract

The theoretical basis of two-frequency saturation is given here in the framework of Provotorov theory. The parameters influencing the saturation efficiency are discussed and studied experimentally using a liquid-crystalline test system. It is shown that double-frequency irradiation can be extremely efficient when the irradiation frequencies are placed at opposite sides of the characteristic frequency of the spin system, and that the frequency separation in the double-frequency irradiation can be varied over a large range. Provotorov theory is also shown to provide good insights into the experimental findings, which would otherwise be difficult to obtain from simulations.