FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2052155536> ?p ?o ?g. }

• W2052155536 endingPage "2471" @default.
• W2052155536 startingPage "2464" @default.
• W2052155536 abstract "The CP/MAS spectra of spins-1/2 directly bonded to a quadrupolar nucleus (for example, C13 coupled to N14) often show fine structure, due to dipolar coupling. As the magnetic field is increased, splittings decrease and disappear. For the C13–N14 system, spectra appear as doublets with an intensity ration of 1:2. The mechanism for this is well-understood. Internuclear dipolar coupling, normally averaged out by spinning, appears because the N14 nucleus is not quantized exactly along the static magnetic field—the molecule-fixed quadrupolar interaction is not negligible compared to the lab-frame Zeeman interaction. Sample spinning cannot remove dipolar coupling if the quantization direction depends on molecular orientation. While the principle is clear, a fully detailed theory is lacking. Perturbation theory or average Hamiltonian theory work well if the quadrupolar interaction is small, or is very large, with respect to Zeeman term. However, there is little available that permits the calculation of the full spinning sideband spectra for all strengths of the quadrupolar interaction. In this paper, the spin system is solved exactly, by full matrix diagonalization, for a given orientation. This involves a careful analysis of the definition of quantization. Floquet theory is adopted to handle sample spinning—the time-dependent Hamiltonian is replaced by an expanded time-independent “Floquet” Hamiltonian. Due to the time-dependent quantization direction resulting from quadrupolar coupling, off-diagonal blocks must be computed by numerical Fourier transformation. Once the Floquet matrix is set up, and dephasing of coherences accounted, the result is a comprehensive means of simulating spectra, valid for all ranges of parameters." @default.
• W2052155536 created "2016-06-24" @default.
• W2052155536 creator A5007959827 @default.
• W2052155536 creator A5064322155 @default.
• W2052155536 creator A5078354569 @default.
• W2052155536 date "2002-02-08" @default.
• W2052155536 modified "2023-09-25" @default.
• W2052155536 title "Residual dipolar coupling in the CP/MAS nuclear magnetic resonance spectra of spin-1/2 nuclei coupled to quadrupolar nuclei application of floquet theory" @default.
• W2052155536 cites W1964137422 @default.
• W2052155536 cites W1966235885 @default.
• W2052155536 cites W1967173457 @default.
• W2052155536 cites W1969689773 @default.
• W2052155536 cites W1976116111 @default.
• W2052155536 cites W1977943608 @default.
• W2052155536 cites W1978030601 @default.
• W2052155536 cites W1979281906 @default.
• W2052155536 cites W1981291116 @default.
• W2052155536 cites W1982740917 @default.
• W2052155536 cites W1982772210 @default.
• W2052155536 cites W1986887268 @default.
• W2052155536 cites W1987624292 @default.
• W2052155536 cites W1988188744 @default.
• W2052155536 cites W1997102646 @default.
• W2052155536 cites W1999635612 @default.
• W2052155536 cites W2004871937 @default.
• W2052155536 cites W2007126916 @default.
• W2052155536 cites W2008022049 @default.
• W2052155536 cites W2008340011 @default.
• W2052155536 cites W2011734776 @default.
• W2052155536 cites W2013466537 @default.
• W2052155536 cites W2022680842 @default.
• W2052155536 cites W2023916715 @default.
• W2052155536 cites W2023956973 @default.
• W2052155536 cites W2024179708 @default.
• W2052155536 cites W2032970230 @default.
• W2052155536 cites W2038552099 @default.
• W2052155536 cites W2039048277 @default.
• W2052155536 cites W2043611839 @default.
• W2052155536 cites W2047856186 @default.
• W2052155536 cites W2060981190 @default.
• W2052155536 cites W2067761434 @default.
• W2052155536 cites W2068094702 @default.
• W2052155536 cites W2068633006 @default.
• W2052155536 cites W2069689905 @default.
• W2052155536 cites W2074119519 @default.
• W2052155536 cites W2080711947 @default.
• W2052155536 cites W2082705268 @default.
• W2052155536 cites W2083223253 @default.
• W2052155536 cites W2087951246 @default.
• W2052155536 cites W2093703646 @default.
• W2052155536 cites W2159359535 @default.
• W2052155536 cites W2167349000 @default.
• W2052155536 cites W2169843378 @default.
• W2052155536 cites W2216090784 @default.
• W2052155536 cites W2503969013 @default.
• W2052155536 cites W2952279046 @default.
• W2052155536 cites W4235261249 @default.
• W2052155536 cites W4362225795 @default.
• W2052155536 cites W1983484294 @default.
• W2052155536 doi "https://doi.org/10.1063/1.1433003" @default.
• W2052155536 hasPublicationYear "2002" @default.
• W2052155536 type Work @default.
• W2052155536 sameAs 2052155536 @default.
• W2052155536 citedByCount "4" @default.
• W2052155536 crossrefType "journal-article" @default.
• W2052155536 hasAuthorship W2052155536A5007959827 @default.
• W2052155536 hasAuthorship W2052155536A5064322155 @default.
• W2052155536 hasAuthorship W2052155536A5078354569 @default.
• W2052155536 hasConcept C115260700 @default.
• W2052155536 hasConcept C121332964 @default.
• W2052155536 hasConcept C126255220 @default.
• W2052155536 hasConcept C130787639 @default.
• W2052155536 hasConcept C150769733 @default.
• W2052155536 hasConcept C154815118 @default.
• W2052155536 hasConcept C158622935 @default.
• W2052155536 hasConcept C173523689 @default.
• W2052155536 hasConcept C176900771 @default.
• W2052155536 hasConcept C184779094 @default.
• W2052155536 hasConcept C185592680 @default.
• W2052155536 hasConcept C188027245 @default.
• W2052155536 hasConcept C25227350 @default.
• W2052155536 hasConcept C26873012 @default.
• W2052155536 hasConcept C2778870898 @default.
• W2052155536 hasConcept C28855332 @default.
• W2052155536 hasConcept C31972630 @default.
• W2052155536 hasConcept C33923547 @default.
• W2052155536 hasConcept C41008148 @default.
• W2052155536 hasConcept C41999313 @default.
• W2052155536 hasConcept C4839761 @default.
• W2052155536 hasConcept C49023278 @default.
• W2052155536 hasConcept C55649039 @default.
• W2052155536 hasConcept C62520636 @default.
• W2052155536 hasConceptScore W2052155536C115260700 @default.
• W2052155536 hasConceptScore W2052155536C121332964 @default.
• W2052155536 hasConceptScore W2052155536C126255220 @default.
• W2052155536 hasConceptScore W2052155536C130787639 @default.
• W2052155536 hasConceptScore W2052155536C150769733 @default.
• W2052155536 hasConceptScore W2052155536C154815118 @default.

• next