Аннотация
A method is implemented to perform "fast" adiabatic variation of the spin Hamiltonian by imposing the constant adiabaticity condition. The method is applied to improve the performance of singlet-state Nuclear Magnetic Resonance (NMR) experiments, specifically, for efficient generation and readout of the singlet spin order in coupled spin pairs by applying adiabatically ramped RF-fields. Test experiments have been performed on a specially designed molecule having two strongly coupled 13 C spins and on selectively isotopically labelled glycerol having two pairs of coupled protons. Optimized RF-ramps show improved performance in comparison, for example, to linear ramps. We expect that the methods described here are useful not only for singlet-state NMR experiments but also for other experiments in magnetic resonance, which utilize adiabatic variation of the spin Hamiltonian.
Язык оригинала | английский |
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Номер статьи | 064201 |
Страницы (с-по) | 064201 |
Число страниц | 11 |
Журнал | Journal of Chemical Physics |
Том | 150 |
Номер выпуска | 6 |
DOI | |
Состояние | Опубликовано - 14 февр. 2019 |