Simultaneous Recording of NMR Signals from Nuclei with Diﬀerent Gyromagnetic Ratios Using Undersampling Technique

Anisimov, N.V.; Pavlova, O.S.

Информация о цитировании статьи получена из Web of Science, Scopus
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Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.

Авторы: Anisimov Nikolay V., Pavlova Olga S.
Журнал: Applied Magnetic Resonance
Том: 49
Номер: 5
Год издания: 2018
Издательство: Springer Verlag
Местоположение издательства: Germany
Первая страница: 523
Последняя страница: 532
DOI: 10.1007/s00723-018-0998-x
Аннотация: The article describes experiments on the simultaneous recording nuclear magnetic resonance signals from two nuclei with diﬀerent gyromagnetic ratios—1H and 19F, 13C and 23Na. It is shown that large frequency detunings or/and low sam-pling rates are not an obstacle to their realization even in a relatively weak (0.5 T) ﬁeld. We use undersampling technique when registering the response of the spin system. In this case, the sampling frequency is much less than the distance between the Larmor frequencies for the indicated nuclear pairs. It gives the eﬀect of multiple aliasing. Fourier processing of the response produces a spectrum consisting of two subspectra, each of which corresponds to speciﬁc nucleus of the investigated pair. The subordination of the spectral peaks in each subspectrum is the same as the spec-trum obtained by the usual way. Two variants of the radio-frequency excitation of the spin system (single and double pulse) are considered. A formula for calculating the excitation frequency and sampling rate, which ensures a rational distribution of the lines in the hybrid spectrum, is proposed.
Добавил в систему: Анисимов Николай Викторович

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Simultaneous Recording of NMR Signals from Nuclei with Diﬀerent Gyromagnetic Ratios Using Undersampling Techniqueстатья

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