Open AccessZ ECHO NMR POWDER SPECTRUM OF THREE-LEVEL SYSTEMS
Author(s) -
Gengying Li,
Wu Xue-Wen
Publication year - 1991
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.40.1717
Subject(s) - nutation , echo (communications protocol) , pulse sequence , nuclear magnetic resonance , quadrupole , anisotropy , spin echo , materials science , spectrum (functional analysis) , nuclear quadrupole resonance , dipole , nuclear magnetic resonance spectroscopy , carbon 13 nmr satellite , field (mathematics) , electromagnetic shielding , physics , computational physics , atomic physics , fluorine 19 nmr , optics , magnetic resonance imaging , quantum mechanics , computer science , medicine , computer network , mathematics , pure mathematics , radiology , composite material
A Z echo NMR pulse sequence is proposed for using in measurement of pure dipole or quadrupole spectrum. The Z echo NMR powder lineshape is not only independent of chemical shielding anisotropy but also, under strong radio-frequency field condition, independent of rf field inhomogeneity. This method is superior obviously to nutation NMR technique. The conclusions were analyzed theoretically and confirmed by experimental results.