Pulse techniques improve EPR resolution by using a sequence of short microwave pulses to select spin species to be detected, to separate spin interactions, and to obtain information at time domain. A variety of pulsed EPR have been developed with applications in physics, chemistry and biology. For instance, electron spin interaction and spin-spin distance can be revealed by PELDOR (Pulsed Electron-Electron Double Resonance), also known as DEER (Double Electron Electron Resonance). ESEEM (Electron spin echo envelope modulation) and ENDOR (pulsed electron nuclear double resonance) are used to determine the interactions of the electron spin with its surrounding nuclear spins. The EMR facility at the MagLab offers several pulsed EPR spectrometers at frequencies from 9 to 336 GHz.
Images & Sample Data
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Temperature-dependent electron relaxation rate.
Temperature-dependent electron relaxation rate.
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Distance measurements using pulsed EPR.
Distance measurements using pulsed EPR.
https://nationalmaglab.org/user-facilities/emr/emr-measurement-techniques/pulsed-esr-epr?tmpl=component&print=1#sigProId5d496fd6cc
Instrumentation
Related Publications
Lumata, LL, et al, Dissolution DNP-NMR spectroscopy using galvinoxyl as a polarizing agent, J. Magn. Reson., 227 (2013) Read online
van Tol, J., et al, Anomalous Phases in Cavity-Free 240 GHz Pulsed ENDOR Spectra of 1.44 GeV Xe-Irradiated LiF, Appl. Magn. Reson., 44 (2013) Read online
Vileno, B, et al, Broad disorder and the allosteric mechanism of myosin II regulation by phosphorylation. P. Natl. Acad. Sci. U.S.A.,108 (20), 8218-23 (2011) Read online
Takahashi, S., et al, Coherent manipulation and decoherence of S=10 single-molecule magnets, Phys. Rev. Lett., 102 (2009) Read online
Morley, G.W., et al, A multifrequency high-field pulsed electron paramagnetic resonance/electron-nuclear double resonance spectrometer, Rev. Sci. Instrum., 79 (2008) Read online