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Semi‐analytical description of the S = 9/2 quadrupole nutation NMR experiment: multinuclear application to 113 In and 115 In in indium phosphide
Author(s) -
Kempgens Pierre
Publication year - 2015
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.4186
Subject(s) - chemistry , quadrupole , coupling constant , excited state , excitation , analytical chemistry (journal) , nutation , amplitude , coupling (piping) , spin (aerodynamics) , atomic physics , nuclear magnetic resonance , physics , mechanical engineering , quantum mechanics , chromatography , engineering , thermodynamics , particle physics , astronomy
The density matrix of a spin S = 9/2 excited by a radiofrequency pulse is calculated. The interaction involved during the excitation of the spin system is first‐order quadrupolar. Consequently, the results are valid for any ratio of the quadrupolar coupling ω Q to the pulse amplitude ω 1 . The behavior of the central transition intensities versus the pulse length is discussed. The 115 In and 113 In nuclei in a powdered sample of indium phosphide (InP) are used to illustrate the results. It is found that the ratio of the quadrupolar coupling constants determined in this work is in excellent agreement with the ratio of the quadrupole moments of the two nuclei. Copyright © 2015 John Wiley & Sons, Ltd.