Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5407679 | Journal of Magnetic Resonance | 2006 | 6 Pages |
Abstract
This is a study of the cross-polarization effects in the case of 14N quadrupolar spin-system with a long spin-lattice relaxation time. Two important benefits of the cross-polarization technique were demonstrated for PETN: (i) a polarization transfer resulting in increased NQR single shot signal response and (ii) a dynamic reduction in recovery time of the NQR system allowing scan repetition on a much shorter timescale. It was proved that this technique can reduce the optimal waiting time between pulse sequences up to 60 times through a significant reduction of the relaxation time of the quadrupolar spin-system. All experiments were carried out at room temperature using spin-locking multi-pulse sequences and small external magnetic field.
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Physical and Theoretical Chemistry
Authors
T.N. Rudakov, P.A. Hayes,