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Towards shorter composite 180° refocusing pulses for NMR

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Towards shorter composite 180° refocusing pulses for NMR. / Wimperis, Stephen.
In: Journal of Magnetic Resonance, Vol. 367, 107758, 10.09.2024.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Wimperis, S 2024, 'Towards shorter composite 180° refocusing pulses for NMR', Journal of Magnetic Resonance, vol. 367, 107758. https://doi.org/10.1016/j.jmr.2024.107758

APA

Wimperis, S. (2024). Towards shorter composite 180° refocusing pulses for NMR. Journal of Magnetic Resonance, 367, Article 107758. https://doi.org/10.1016/j.jmr.2024.107758

Vancouver

Wimperis S. Towards shorter composite 180° refocusing pulses for NMR. Journal of Magnetic Resonance. 2024 Sept 10;367:107758. Epub 2024 Aug 19. doi: 10.1016/j.jmr.2024.107758

Author

Wimperis, Stephen. / Towards shorter composite 180° refocusing pulses for NMR. In: Journal of Magnetic Resonance. 2024 ; Vol. 367.

Bibtex

@article{92eb7dee285d4b979088c3abf0aa098e,
title = "Towards shorter composite 180° refocusing pulses for NMR",
abstract = "Novel composite 180° pulses are designed for use in nuclear magnetic resonance (NMR) and verified experimentally using solution-state 1H NMR spectroscopy. Rather than being constructed from 180° pulses (as in much recent work), the new composite pulses are constructed from 90° pulses, with the aim of finding sequences that are shorter overall than existing equivalents. The primary (but not exclusive) focus is on composite pulses that are dual compensated – simultaneously broadband with respect to both inhomogeneity of the radiofrequency field and resonance offset – and have antisymmetric phase schemes, such that they can be used to form spin echoes without the introduction of a phase error. In particular, a new antisymmetric dual-compensated refocusing pulse is presented that is constructed from ten 90° pulses, equivalent to just five 180° pulses.",
keywords = "Composite pulses, Error compensation, Phase cycling, Pulse imperfections, Resonance offset, Spin echoes, ω inhomogeneity",
author = "Stephen Wimperis",
year = "2024",
month = sep,
day = "10",
doi = "10.1016/j.jmr.2024.107758",
language = "English",
volume = "367",
journal = "Journal of Magnetic Resonance",
issn = "1090-7807",
publisher = "Academic Press Inc.",

}

RIS

TY - JOUR

T1 - Towards shorter composite 180° refocusing pulses for NMR

AU - Wimperis, Stephen

PY - 2024/9/10

Y1 - 2024/9/10

N2 - Novel composite 180° pulses are designed for use in nuclear magnetic resonance (NMR) and verified experimentally using solution-state 1H NMR spectroscopy. Rather than being constructed from 180° pulses (as in much recent work), the new composite pulses are constructed from 90° pulses, with the aim of finding sequences that are shorter overall than existing equivalents. The primary (but not exclusive) focus is on composite pulses that are dual compensated – simultaneously broadband with respect to both inhomogeneity of the radiofrequency field and resonance offset – and have antisymmetric phase schemes, such that they can be used to form spin echoes without the introduction of a phase error. In particular, a new antisymmetric dual-compensated refocusing pulse is presented that is constructed from ten 90° pulses, equivalent to just five 180° pulses.

AB - Novel composite 180° pulses are designed for use in nuclear magnetic resonance (NMR) and verified experimentally using solution-state 1H NMR spectroscopy. Rather than being constructed from 180° pulses (as in much recent work), the new composite pulses are constructed from 90° pulses, with the aim of finding sequences that are shorter overall than existing equivalents. The primary (but not exclusive) focus is on composite pulses that are dual compensated – simultaneously broadband with respect to both inhomogeneity of the radiofrequency field and resonance offset – and have antisymmetric phase schemes, such that they can be used to form spin echoes without the introduction of a phase error. In particular, a new antisymmetric dual-compensated refocusing pulse is presented that is constructed from ten 90° pulses, equivalent to just five 180° pulses.

KW - Composite pulses

KW - Error compensation

KW - Phase cycling

KW - Pulse imperfections

KW - Resonance offset

KW - Spin echoes

KW - ω inhomogeneity

U2 - 10.1016/j.jmr.2024.107758

DO - 10.1016/j.jmr.2024.107758

M3 - Journal article

VL - 367

JO - Journal of Magnetic Resonance

JF - Journal of Magnetic Resonance

SN - 1090-7807

M1 - 107758

ER -