Enhanced sensitivity in RIACT/MQ-MAS NMR experiments using rotor assisted population transfer.
نویسندگان
چکیده
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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ورودعنوان ژورنال:
- Journal of magnetic resonance
دوره 150 1 شماره
صفحات -
تاریخ انتشار 2001