H broadband excitation by average Hamiltonian ...
Document type :
Article dans une revue scientifique: Article original
DOI :
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Title :
H broadband excitation by average Hamiltonian theory.
Author(s) :
Shen, M. [Auteur]
Roopchand, R. [Auteur]
Mananga, E. S. [Auteur]
Amoureux, Jean-Paul [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Chen, Q. [Auteur]
Boutis, G. S. [Auteur]
Hu, B. [Auteur]
Roopchand, R. [Auteur]
Mananga, E. S. [Auteur]
Amoureux, Jean-Paul [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Chen, Q. [Auteur]
Boutis, G. S. [Auteur]
Hu, B. [Auteur]
Journal title :
Bo Pu Xue Za Zhi
Volume number :
32
Pages :
373-381
Publication date :
2015-06-05
ISSN :
1000-4556
HAL domain(s) :
Chimie
English abstract : [en]
Quadrupolar echo NMR spectroscopy of solids often requires RF pulse excitation that covers spectral widths exceeding 100 kHz. In a recent work we found out that a four pulse, composite pulse COM-II ( [Formula: see text] ...
Show more >Quadrupolar echo NMR spectroscopy of solids often requires RF pulse excitation that covers spectral widths exceeding 100 kHz. In a recent work we found out that a four pulse, composite pulse COM-II ( [Formula: see text] ), provided robust broadband excitation for deuterium quadrupolar echo spectroscopy. Moreover, when combined with an eight step phase cycle, spectral distortions arising from finite pulse widths were greatly supressed. In this paper we report on a theoretical analysis COM-II with 8-step phase cycle by average Hamiltonian theory. This treatment is combined with the fictitious spin-1 operator formalism, and the mechanism of the 8-step phase cycling that minimizes the spectral distortions is discussed.Show less >
Show more >Quadrupolar echo NMR spectroscopy of solids often requires RF pulse excitation that covers spectral widths exceeding 100 kHz. In a recent work we found out that a four pulse, composite pulse COM-II ( [Formula: see text] ), provided robust broadband excitation for deuterium quadrupolar echo spectroscopy. Moreover, when combined with an eight step phase cycle, spectral distortions arising from finite pulse widths were greatly supressed. In this paper we report on a theoretical analysis COM-II with 8-step phase cycle by average Hamiltonian theory. This treatment is combined with the fictitious spin-1 operator formalism, and the mechanism of the 8-step phase cycling that minimizes the spectral distortions is discussed.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois
CNRS
Centrale Lille
ENSCL
Univ. Artois
Collections :
Research team(s) :
RMN et matériaux inorganiques (RM2I)
Submission date :
2023-05-30T16:28:31Z
2024-01-16T17:43:34Z
2024-01-16T17:43:34Z