Analytical expressions and lineshape simulations for Levitt-Suter-Ernst composite-pulse quadrupolar echo sequences

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Abstract

Analytical expressions are derived for the Levitt-Suter-Emst composite quadrupolar echo sequences, allowing facile lineshape calculations for comparison with experiment. Large phase distortions in the lineshape obtained with the first-order sequence are significantly reduced with the second-order sequence. For 90° pulse lengths greater than ∼5μs, both sequences produce large phase errors for typical 2H quadrupolar coupling strengths in solids.

Original languageEnglish (US)
Pages (from-to)491-500
Number of pages10
JournalJournal of Magnetic Resonance (1969)
Volume67
Issue number3
DOIs
StatePublished - 1986
Externally publishedYes

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phase error
echoes
composite materials
pulses
simulation

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title = "Analytical expressions and lineshape simulations for Levitt-Suter-Ernst composite-pulse quadrupolar echo sequences",
abstract = "Analytical expressions are derived for the Levitt-Suter-Emst composite quadrupolar echo sequences, allowing facile lineshape calculations for comparison with experiment. Large phase distortions in the lineshape obtained with the first-order sequence are significantly reduced with the second-order sequence. For 90° pulse lengths greater than ∼5μs, both sequences produce large phase errors for typical 2H quadrupolar coupling strengths in solids.",
author = "Thomas Barbara",
year = "1986",
doi = "10.1016/0022-2364(86)90386-0",
language = "English (US)",
volume = "67",
pages = "491--500",
journal = "Journal of Magnetic Resonance (1969)",
issn = "0022-2364",
publisher = "Academic Press Inc.",
number = "3",

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T1 - Analytical expressions and lineshape simulations for Levitt-Suter-Ernst composite-pulse quadrupolar echo sequences

AU - Barbara, Thomas

PY - 1986

Y1 - 1986

N2 - Analytical expressions are derived for the Levitt-Suter-Emst composite quadrupolar echo sequences, allowing facile lineshape calculations for comparison with experiment. Large phase distortions in the lineshape obtained with the first-order sequence are significantly reduced with the second-order sequence. For 90° pulse lengths greater than ∼5μs, both sequences produce large phase errors for typical 2H quadrupolar coupling strengths in solids.

AB - Analytical expressions are derived for the Levitt-Suter-Emst composite quadrupolar echo sequences, allowing facile lineshape calculations for comparison with experiment. Large phase distortions in the lineshape obtained with the first-order sequence are significantly reduced with the second-order sequence. For 90° pulse lengths greater than ∼5μs, both sequences produce large phase errors for typical 2H quadrupolar coupling strengths in solids.

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U2 - 10.1016/0022-2364(86)90386-0

DO - 10.1016/0022-2364(86)90386-0

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VL - 67

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EP - 500

JO - Journal of Magnetic Resonance (1969)

JF - Journal of Magnetic Resonance (1969)

SN - 0022-2364

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