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Elsevier, Journal of Magnetic Resonance, 2(209), p. 306-309

DOI: 10.1016/j.jmr.2011.01.032

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Use of the Frank Sequence in Pulsed EPR

Journal article published in 2011 by Mark Tseitlin, Richard W. Quine, Sandra S. Eaton, Gareth R. Eaton, Howard J. Halpern, J.-H. Ardenkjaer-Larsen ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The Frank polyphase sequence has been applied to pulsed EPR of triarylmethyl radicals at 25 6 MHz (9.1 mT 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. 1.5 mW in the application reported here) relative to standard pulsed EPR. A 0.2 mM aqueous solution of a triarylmethyl radical was studied using a 16 mm diameter cross-loop resonator to isolate the EPR signal detection system from the incident pulses.