@article{79fa9c3bfe02463082571a5d6bfa943d,
title = "Optimizing the 13C-14N REAPDOR NMR Experiment: A Theoretical and Experimental Study",
abstract = "The optimum 14N pulse lengths in the 13C-14N rotational-echo adiabatic-passage double-resonance (REAPDOR) NMR experiment are determined from calculations and from experiments on samples of glycine and L-alanine. The REAPDOR experiment utilizes the adiabatic passages that 14N spins make between the 14N Zeeman energy levels during the application of a single, short 14N radiofrequency pulse. Use of a short 14N irradiation time of less than one-quarter of a rotor period ensures that the number of 14N spins that undergo more than one passage is minimized. This simplifies calculations describing 13C dipolar dephasing and provides better agreement between calculations and experiments. Recovery of the 13C-14N dipolar couplings and 14N quadrupolar coupling constants and asymmetry parameters is described.",
keywords = "Double resonance, Nitrogen, NMR, REAPDOR",
author = "Yong Ba and Kao, {Hsien Ming} and Grey, {Clare P.} and Lamy Chopin and Terry Gullion",
note = "Funding Information: Support from the NSF to C.P.G. through the National Young Investigator program (DMR-9458017) and for Grant CHE-9405436 to purchase the CMX-360 NMR spectrometer is gratefully acknowledged. T.G. thanks the NSF for partial support of this work through CHE-9796188 and acknowledges the donors of the Petroleum Research Fund, administered by the American Chemical Society, for partial support of this research. Shimon Vega and Amir Goldbourt are thanked for providing the computer program used for the numerical simulations and for stimulating discussions.",
year = "1998",
month = jul,
doi = "10.1006/jmre.1998.1422",
language = "???core.languages.en_GB???",
volume = "133",
pages = "104--114",
journal = "Journal of Magnetic Resonance",
issn = "1090-7807",
number = "1",
}