Gd(III)-Gd(III) distance measurements with chirp pump pulses.

Abstract

The broad EPR spectrum of Gd(III) spin labels restricts the dipolar modulation depth in distance measurements between Gd(III) pairs to a few percent. To overcome this limitation, frequency-swept chirp pulses are utilized as pump pulses in the DEER experiment. Using a model system with 3.4 nm Gd-Gd distance, application of one single chirp pump pulse at Q… (More)
DOI: 10.1016/j.jmr.2015.08.010

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