Published in
Elsevier, Journal of Magnetic Resonance, 1(164), p. 165-170
DOI: 10.1016/s1090-7807(03)00180-0
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Heteronuclear dipolar recoupling in liquid crystals and solids by PISEMA-type pulse sequences
Journal article published in 2003 by
Sergey V. Dvinskikh 
,
Herbert Zimmermann,
Arnold Maliniak,
Dick Sandström
,
Herbert Zimmermann,
Arnold Maliniak,
Dick Sandström
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Abstract
A pulse sequence is described for the recoupling of heteronuclear dipolar interactions under MAS. The method is similar to the PISEMA experiment, but employs a well-defined amplitude modulation of one of the two radio-frequency fields. The technique is used for measurements of 1H-13C dipolar couplings in unoriented solid and liquid-crystalline samples.