Use of the Frank sequence in pulsed EPR

Mark Tseitlin, Richard W. Quine, Sandra S. Eaton, Gareth R. Eaton, Howard J. Halpern, Jan Henrik Ardenkjær-Larsen

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    The Frank polyphase sequence has been applied to pulsed EPR of triarylmethyl radicals at 256MHz (9.1mT magnetic field), using 256 phase pulses. In EPR, as in NMR, use of a Frank sequence of phase steps permits pulsed FID signal acquisition with very low power microwave/RF pulses (ca. 1.5mW in the application reported here) relative to standard pulsed EPR. A 0.2mM aqueous solution of a triarylmethyl radical was studied using a 16mm diameter cross-loop resonator to isolate the EPR signal detection system from the incident pulses.
    Keyword: Correlation spectroscopy,Multi-pulse EPR,Low power pulses,NMR,EPR,Frank sequence
    Original languageEnglish
    JournalJournal of Magnetic Resonance
    Issue number2
    Pages (from-to)306-309
    Publication statusPublished - 2011


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