HIGH-RESOLUTION NMR SPECTROSCOPIC STUDY ON THE CENTRAL TRANSITION OF SPIN-3/2 QUADRUPOLAR NUCLEI IN POWDERS | Zendy

Gengying Li | Zendy; WU XUE-WEN | Zendy

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HIGH-RESOLUTION NMR SPECTROSCOPIC STUDY ON THE CENTRAL TRANSITION OF SPIN-3/2 QUADRUPOLAR NUCLEI IN POWDERS

Author(s) -

Gengying Li,

WU XUE-WEN

Publication year - 1990

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.39.1848

Subject(s) - materials science , excitation , magnetization , resolution (logic) , spin (aerodynamics) , nuclear magnetic resonance , tensor (intrinsic definition) , electric field gradient , orientation (vector space) , pulse (music) , spectral line , field (mathematics) , molecular physics , magnetic field , condensed matter physics , atomic physics , physics , optics , mathematics , quantum mechanics , quadrupole , artificial intelligence , astronomy , detector , computer science , pure mathematics , thermodynamics , geometry

We make use of the selectivity of pulse excitation in the central transition of spin-3/2 quadrupolar nuclei, and in powder sample, employ a 90°pulse to rotate the nuclear spin magnetization of certain spatial orientation of the electric-field-gradient tensor to the XY plane of the rotating frame for detection. Thus, high resolution spectrum similar to that obtained in a single crystal is acquired. The result is analyzed by density operator formula theoretically and confirmed by 23Na spectra of NaNO2 and Na2SO4 powders experimentally.

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