2007
DOI: 10.1016/j.jmr.2006.11.003
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Fitting of deuterium quadrupole echo spectra with multiple motional models

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Cited by 4 publications
(6 citation statements)
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“…Because pure benzene is in liquid and vapor form at 25 °C, the C 6 or SAW pattern signifies that benzene- d 6 experiences restricted motion due to its association with the humic and fulvic acids. In an initial fitting of some of the spectra, both SAW and C 6 models were tried, and it appeared that SAW fit these spectra as a group slightly better as gauged by values of R , a measure of the difference between fitted and experimental spectra; , therefore, SAW was chosen to match the broad pattern in all further fits. Differences between spectra with echo delay (τ) values of 25 and 50 μs did not assist in distinguishing between the two models; rather, spectra for both delays were generally better fit with the SAW model.…”
Section: Resultsmentioning
confidence: 99%
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“…Because pure benzene is in liquid and vapor form at 25 °C, the C 6 or SAW pattern signifies that benzene- d 6 experiences restricted motion due to its association with the humic and fulvic acids. In an initial fitting of some of the spectra, both SAW and C 6 models were tried, and it appeared that SAW fit these spectra as a group slightly better as gauged by values of R , a measure of the difference between fitted and experimental spectra; , therefore, SAW was chosen to match the broad pattern in all further fits. Differences between spectra with echo delay (τ) values of 25 and 50 μs did not assist in distinguishing between the two models; rather, spectra for both delays were generally better fit with the SAW model.…”
Section: Resultsmentioning
confidence: 99%
“…22,30,40 Errors in the percentages of motional models given below are based on the noise standard deviation of each experimental spectrum and are one-half of the error provided by DFP, which is based on twice the noise standard deviation. 37 Inversion recovery spectra were fit after inverting negative spectra so that the amplitude of each spectrum was positive. Spectra close to a null with both positive and negative intensity were rejected from the analysis.…”
Section: ' Experimental Methodsmentioning
confidence: 99%
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