Results 241 to 250 of about 18,408 (298)
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Journal of Magnetic Resonance, 2005
A pulsed ENDOR spectrometer operating at a microwave frequency of 275 GHz is described. The results demonstrate that this type of spectroscopy can now be performed routinely at this high microwave frequency. The advantages compared to conventional EPR frequencies are the high spectral resolution, time resolution, and sensitivity.
H, Blok +4 more
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A pulsed ENDOR spectrometer operating at a microwave frequency of 275 GHz is described. The results demonstrate that this type of spectroscopy can now be performed routinely at this high microwave frequency. The advantages compared to conventional EPR frequencies are the high spectral resolution, time resolution, and sensitivity.
H, Blok +4 more
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2001
Abstract Apart from the ESEEM methods described in the previous two chapters, electron nuclear double resonance (ENDOR) spectroscopyl ‘l is the other well-established magnetic resonance technique for measuring nuclear transition frequencies of paramagnetic compounds.
Arthur Schweiger, Gunnar Jeschke
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Abstract Apart from the ESEEM methods described in the previous two chapters, electron nuclear double resonance (ENDOR) spectroscopyl ‘l is the other well-established magnetic resonance technique for measuring nuclear transition frequencies of paramagnetic compounds.
Arthur Schweiger, Gunnar Jeschke
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Molecular Physics, 1969
The ENDOR spectra of Tschitschibabin's hydrocarbon and certain of its specifically deuterated derivatives have been measured. To interpret these spectra the factors determining the ENDOR spectrum of a biradical are discussed in detail. The analysis reveals that the paramagnetic species present in solutions of Tschitschibabin's hydrocarbon and ...
H.-D. Brauer +4 more
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The ENDOR spectra of Tschitschibabin's hydrocarbon and certain of its specifically deuterated derivatives have been measured. To interpret these spectra the factors determining the ENDOR spectrum of a biradical are discussed in detail. The analysis reveals that the paramagnetic species present in solutions of Tschitschibabin's hydrocarbon and ...
H.-D. Brauer +4 more
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Chemical Physics Letters, 1989
Abstract A new method is described to generate subsystem ESR spectra and hyperfine-selective ENDOR spectra. It is based on a pulsed ENDOR scheme that achieves hyperfine selectivity by a rapid magnetic field jump between the microwave pulses. The procedure allows the measurement of hyperfine and quadrupole couplings that are not resolved in a ...
C. Bühlmann, A. Schweiger, R.R. Ernst
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Abstract A new method is described to generate subsystem ESR spectra and hyperfine-selective ENDOR spectra. It is based on a pulsed ENDOR scheme that achieves hyperfine selectivity by a rapid magnetic field jump between the microwave pulses. The procedure allows the measurement of hyperfine and quadrupole couplings that are not resolved in a ...
C. Bühlmann, A. Schweiger, R.R. Ernst
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2023
This book offers an analysis of the way early modern English literature addressed the period's anxieties about witchcraft and theatricality. What determined whether or not a demonologist imagined a trial as a spectacle? What underlying epistemological constraints governed such choices and what conceptions of witchcraft did these choices reveal? Pairing
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This book offers an analysis of the way early modern English literature addressed the period's anxieties about witchcraft and theatricality. What determined whether or not a demonologist imagined a trial as a spectacle? What underlying epistemological constraints governed such choices and what conceptions of witchcraft did these choices reveal? Pairing
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Metalloprotein — Endor- Spectroscopy
1995The theoretical foundations for the application of high-resolution electronnuclear-double-resonance spectroscopy to the determination of structural properties of the prosthetic group in randomly oriented metalloproteins are delineated. Applications described involve Superoxide Dismutase as a copper-containing protein and Enoate Reductase as an iron ...
J. Hüttermann +3 more
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ENDOR parameter measurements for free radicals in solution from CW-ENDOR
Journal of Magnetic Resonance (1969), 1983Abstract This analysis gives the computation of the ENDOR relaxation parameters ( Ω n , T n , Ω en ) from experimental data for a low-power CW-ENDOR spectrometer by applying Freed's theory. For resolved and Lorentzian EPR lines resulting from the interaction of the electronic spin with a single nuclear species, Ω n
A Fourrier, A Kreisler
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Molecular Physics, 1976
The 14N ENDOR of the radical anion (SO3)2NO= has been observed in fluid solutions in water and in water-ethanol mixtures, and trapped in irradiated single crystals of potassium hydroxylamine disulphonate. The quadrupole coupling has been estimated from the solid-state spectra and it is argued that this interaction is too weak to provide a significant ...
N. M. Atherton, BRUSTOLON, MARINA ROSA
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The 14N ENDOR of the radical anion (SO3)2NO= has been observed in fluid solutions in water and in water-ethanol mixtures, and trapped in irradiated single crystals of potassium hydroxylamine disulphonate. The quadrupole coupling has been estimated from the solid-state spectra and it is argued that this interaction is too weak to provide a significant ...
N. M. Atherton, BRUSTOLON, MARINA ROSA
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Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1965
A new technique for performing electron nuclear double resonance experiments, based on the observation of electron spin echoes, has been developed. Radio-frequency resonance transitions are induced during the time interval between pulses II and III of a stimulated echo sequence, and cause a fall in the echo signal amplitude.
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A new technique for performing electron nuclear double resonance experiments, based on the observation of electron spin echoes, has been developed. Radio-frequency resonance transitions are induced during the time interval between pulses II and III of a stimulated echo sequence, and cause a fall in the echo signal amplitude.
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Fuel, 1990
Abstract Coals with carbon contents of 76 and 82 wt%, respectively, and their mixtures with ethylenediamine, were investigated by 1 H ENDOR spectroscopy. In all cases the spectra obtained had a single line centred on the free proton frequency and one or two pairs of lines indicating a weak electron-nuclear interaction.
N.D. Yordanov +3 more
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Abstract Coals with carbon contents of 76 and 82 wt%, respectively, and their mixtures with ethylenediamine, were investigated by 1 H ENDOR spectroscopy. In all cases the spectra obtained had a single line centred on the free proton frequency and one or two pairs of lines indicating a weak electron-nuclear interaction.
N.D. Yordanov +3 more
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