Compensating for pulse imperfections in REDOR.
Rotational-echo double resonance (REDOR) is a magic-angle spinning technique for measuring heteronuclear dipolar couplings. Rotor-synchronized pi pulses recouple the dipolar interaction. The accuracy of a REDOR determination of distance or orientation depends totally on the quality of the dephased (recoupled) and full-echo spectra. We present a scheme for measuring and compensating for the effects of pulse imperfections in REDOR experiments. No assumptions are made about the quality of the pi pulses, and no pulses are added or taken away in implementing the compensation for incomplete REDOR dephasing by imperfect pi pulses.
Weldeghiorghis
Thomas K
TK
Department of Chemistry, Washington University, St. Louis, MO 63130, USA.
Schaefer
Jacob
J
D016477:Artifacts; D002247:Carbon Isotopes; D005461:Fluorine; D005465:Fluorocarbon Polymers / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular / Q000379:methods*; D011786:Quality Control; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted; D013113:Spin Labels
D002247:Carbon Isotopes; D005465:Fluorocarbon Polymers; D013113:Spin Labels; D005461:Fluorine; C017647:polycarbon monofluoride