DOI

The popular PISEMA experiment is highly sensitive to the 1H chemical shift dispersion and the choice of the 1H carrier frequency. This is due to the off-resonance 1H irradiation in the FSLG-CP sequence employed during the dipolar evolution period. In the modified approach described in this work, the interfering frequency offset terms are suppressed. In the new pulse schemes, conventional FSLG-CP is intercalated with 180° pulses applied simultaneously to both frequency channels, and with phases set orthogonal to those of the spin-lock fields. The technique is demonstrated on a nematic liquid-crystalline sample. Extensions to amplitude-modulated FSLG-CP recoupling under MAS are also presented.

Язык оригиналаанглийский
Страницы (с-по)163-169
Число страниц7
ЖурналJournal of Magnetic Resonance
Том175
Номер выпуска1
DOI
СостояниеОпубликовано - 1 июл 2005

    Предметные области Scopus

  • Биофизика
  • Биохимия
  • Ядерная физика и физика высоких энергий
  • Физика конденсатов

ID: 48949020