Analytical solution for the inverting pulses with constant adiabaticity

Analytical solution for the inverting pulses with constant adiabaticity Full article

Journal

Journal of Magnetic Resonance
ISSN: 1090-7807

Output data

Year: 2022, Volume: 343, Article number : 107298, Pages count : 11 DOI: 10.1016/j.jmr.2022.107298

Tags

Exact solution for constant adiabaticity, Frequency-swept pulses, Inverting pulses, Spin dynamics

Authors

Ivanov Konstantin L. ^1,2 , Snadin Alexander V. ^1,2 , Kiryutin Alexei S. ^1,2 , Lukzen Nikita N. ^1,2

Affiliations

1	International Tomography Center, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
2	Novosibirsk State University, Novosibirsk 630090, Russia

The exact solution was found for inverting pulses with constant adiabaticity for spin ½. The analytical relationship between the time-varying frequency of the microwave resonant field (or RF field in the case of NMR) and its amplitude time dependence such that the adiabaticity parameter remains constant for the single isochromat throughout the pulse is found. Comparison with EPR (hyperbolic tangent)-(hyperbolic secant) pulse method was carried out. On the basis of the analytical solution the pulses with different dependences of the microwave field amplitude conserving the constant adiabaticity have been constructed. The pulses exhibit rather sharp inversion selectivity that can be used in the field of EPR, NMR and MRI.

Ivanov K.L. , Snadin A.V. , Kiryutin A.S. , Lukzen N.N.
Analytical solution for the inverting pulses with constant adiabaticity
Journal of Magnetic Resonance. 2022. V.343. 107298 :1-11. DOI: 10.1016/j.jmr.2022.107298 WOS OpenAlex

Submitted:	Jul 14, 2022
Accepted:	Sep 2, 2022
Published online:	Dec 9, 2022

Web of science:	WOS:000870022300004
OpenAlex:	W4295008436

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