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215. Electron-nuclear double resonance (ENDOR) of pitches

✍ Scribed by L.S. Singer; I.C. Lewis

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
124 KB
Volume
22
Category
Article
ISSN
0008-6223

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✦ Synopsis

The direct measurements of the principal thermal expansion coefficients were carried out for the specimens of pyrolytic graphite at temperatures between 50 and 55O"C, using an apparatus with high sensitivity. Resolving power of the apparatus was f 100 A. The c-axis thermal expansion coefficient was also directly measured for the specimens of kish graphite flakes.

Thermal diffusivity of fiber reinforced composites using the laser flash technique

πŸ“œ SIMILAR VOLUMES

Electron-nuclear double resonance (endor
Electron-nuclear double resonance (endor) of pitches
✍ L.S. Singer; I.C. Lewis πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 English βš– 547 KB

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. Measurements made over the temperature

Pulsed Electron-Nuclear Double Resonance
Pulsed Electron-Nuclear Double Resonance (ENDOR) at 140 GHz
✍ M. Bennati; C.T. Farrar; J.A. Bryant; S.J. Inati; V. Weis; G.J. Gerfen; P. Riggs πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 144 KB

We describe a spectrometer for pulsed ENDOR at 140 GHz, which is based on microwave IMPATT diode amplifiers and a probe consisting of a TE 011 cavity with a high-quality resonance circuit for variable radiofrequency irradiation. For pulsed EPR we obtain an absolute sensitivity of 3 Ψ‹ 10 9 spins/Gaus

A time-resolved electron nuclear double
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A time-resolved ENDOR (TRENDOR ) apparatus was constructed and applied to observe hyperfine couplings in the photoexcited triplet (Tr ) state. The TRENDOR spectra of the Tt states were observed both in mixed crystals and glass. The hypertine coupling constants were obtained at 4-100 K for quinoxalin

Electron paramagnetic resonance (EPR) an
Electron paramagnetic resonance (EPR) and electron and nuclear double resonance (ENDOR) characterization of radicals produced during the photopolymerization of multifunctional (meth)acrylate monomers
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## Abstract The electron paramagnetic resonance (EPR) spectra obtained from radicals produced during the photopolymerization of multifunctional acrylic and methacrylic monomers have been interpreted by taking into account the EPR line‐broadening due to dynamic exchange between two conformations of