Enhanced sensitivity in RIACT/MQ-MAS NMR experiments using rotor assisted population transfer.
J Magn Reson
; 150(1): 71-80, 2001 May.
Article
em En
| MEDLINE
| ID: mdl-11330985
ABSTRACT
The rotor assisted population transfer (RAPT) sequence is used to enhance the sensitivity of the RIACT(II) experiment for spin-3/2 quadrupolar nuclei. A detailed theoretical analysis of the polarizations that contribute to different types of MQ-MAS experiments is provided. In particular, two polarization pathways are distinguished for the creation of triple-quantum coherence. The existence of these pathways is experimentally demonstrated by comparing the sensitivities of different sequences with and without RAPT preparation.
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01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Ano de publicação:
2001
Tipo de documento:
Article