Results 241 to 250 of about 5,046,560 (290)

Electron Nuclear Double Resonance

2003
In the previous chapters the usefulness of EPR for the characterization of defect structures was demonstrated. EPR is usually a powerful tool, in particular, for preliminary first information about the main symmetry properties of the defect. If optical detection of magnetic resonance is applicable, additional knowledge about the nature of the defect ...
Johann-Martin Spaeth, Harald Overhof
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Electron Nuclear Double Resonance

Annual Review of Physical Chemistry, 1971
Feher introduced the electron nuclear double resonance or ENDOR technique in 1 956 (1) . In the ensuing 1 5 years several hundred ENDOR­ related articles have been published. However, no general review of the subject has appeared. This may be partially due to the fact that ENDOR results Can be thought of as an extension of the usual paramagnetic ...
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Electron-nuclear double resonance (endor) of pitches

Carbon, 1984
Abstract A preliminary study of Electron-Nuclear Double Resonance (ENDOR) has been carried out on carbonaceous pitches and their solutions. Large matrix and hyperfine ENDOR signals have been observed, the former being very sensitive to temperature, i.e. molecular motion.
L.S. Singer, I.C. Lewis
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Electron nuclear double resonance studies on polyacetylene

The Journal of Chemical Physics, 1984
ENDOR measurements have been carried out on trans-polyacetylene and on 0.5 mol % ReF6 doped 70% cis-polyacetylene at 4 K. The pure trans-polyacetylene yields only a single line, but the ReF6 doped material yields two hyperfine couplings to hydrogens of 0.2 and 1.7 MHz. Calculations suggest the average chain length of the soliton is 93 carbon atoms. The
Gareth J. Baker, J. Barrie Raynor, Adam Pron   +2 more
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Electron-nuclear double resonance of 55Mn2+ in MgO

Physics Letters A, 1967
Abstract ENDOR techniques were used to determine the cubic crystalline field splitting a, and the nuclear spin Hamiltonian parameters A, gIμN, and U of 55Mn2+ in MgO at 4.2°K. The nuclear magnetic moment of 55Mn has been dereived to be +(3.437 ± 0.005)μN.
Y.H. Eskes, H.W. de Wijn
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Field-Cycled Electron Nuclear Double Resonance

The Journal of Physical Chemistry, 1994
An electron nuclear double resonance experiment is described which allows the detection of zero-field nuclear quadrupole resonance transitions by observing the unpaired electron spins under field cycling conditions. The feasibility of this kind of experiment is demonstrated by the detection at 2 K of pure deuteron quadrupole transitions in diamagnetic ...
J. Krzystek, M. Notter, Alvin L. Kwiram
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Electron-nuclear double resonance of copper complexes of human transferrin

Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1983
Electron-nuclear double resonance (ENDOR) spectroscopy has been used to study ligand and copper hyperfine interactions in Cu(II) complexes of human transferrin. A nearly isotropic superhyperfine interaction of the Cu(II) spin with a single 14N nucleus was identified, and the principal values of its tensor were estimated.
J E, Roberts, T G, Brown, B M, Hoffman, P, Aisen   +3 more
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Electron-Nuclear Double Resonance of Charcoals

1984
ENDOR (Electron-Nuclear Double Resonance), which was proposed and demonstrated by G. Feher in 1956 (1) is a modification of ESR (Electron Spin Resonance) involving the interaction between nuclear and electron spins in paramagnetic materials. ENDOR belongs to the class of methods called “Double Resonance” in which one transition between atomic or ...
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Electron-nuclear double-resonance experiments in hydrogenated amorphous silicon

Physical Review B, 1986
Electron-nuclear double-resonance (ENDOR) measurements are performed in undoped, doped, and compensated a-Si:H. Matrix ENDOR and distant ENDOR are identified as the effective ENDOR mechanisms by an investigation of the transient ENDOR response, and conditions for the experimental parameters to optimize the response are given. ENDOR spectra due to $^{1}\
, Stutzmann, , Biegelsen
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Matrix Line in Pulsed Electron-Nuclear Double Resonance Spectra

Journal of Magnetic Resonance, 1998
The intense line in Mims and Davies electron-nuclear double resonance (ENDOR) spectra due to the hyperfine interactions of an unpaired electron with distant matrix nuclei is shown to originate from a simultaneous inversion of a large number of nuclear spins by a radiofrequency pulse.
A V, Astashkin, A, Kawamori
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