Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Etienne Boesman"'
A Fast Method for Fitting the G Tensor of EPR Powder Spectra Using the Levenberg-Marquardt Algorithm
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 101:915-921
A finite difference Levenberg-Marquardt algorithm is used for optimizing the principal g tensor values of paramagnetic radicals observed in EPR spectra of polycrystalline materials. A special method is presented to select a small number of data point
Autor:
L. C. Martens, Freddy Callens, F.C.M. Driessens, Paul Matthys, Etienne Boesman, Ronald Verbeeck
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 95:589-596
The ESR spectrum near g=2 of several carbonated calciumapatites synthesized at high temperatures, is studied as a function of incident microwave power. It is shown that the ESR signal observed is the composition of several powder spectrum contributio
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 96:165-171
The effect of the substitution mechanism of carbonate ions in calciumapatites synthesized at high temperature on the Electron Spin Resonance (ESR) spectrum is studied. Two pairs of 13C hyperfine lines were detected in the spectrum of all X-irradiated
Publikováno v:
Applied Magnetic Resonance. 15:539-555
In a recent electron paramagnetic resonance (EPR) and electron nuclear double resonance (ENDOR) study several new rhodium related centres in a Bridgman-grown crystal were reported. For two centres a detailed microscopic model was established. The pri
Publikováno v:
Calcified Tissue International. 63:409-415
Powdered tooth enamel heated at 400°C has been examined with electron paramagnetic resonance (EPR), electron-nuclear double resonance (ENDOR), and ENDOR-induced EPR (EIEPR) methods and compared with hydroxyapatite synthesized at high temperature. Th
Publikováno v:
Applied Magnetic Resonance. 14:235-254
After exposure of biological (tooth enamel, bone, …) and synthetic apatites to ionizing radiation, the so-called “asymmetric EPR signal nearg = 2” is formed. Although this signal is being used in EPR dosimetry, dating and detection of irradiate
Autor:
Henk Vrielinck, H. Käss, Dirk Schoemaker, Etienne Boesman, Etienne Goovaerts, H Vercammen, A Bouwen, Kris Sabbe, Freddy Callens
Publikováno v:
Journal of the Chemical Society: Faraday transactions: physical chemistry and chemical physics
Recent EPR and ENDOR publications demonstrated that several closely related Rh2+ complexes may be simultaneously present in rhodium doped NaCl and AgCl. These complexes only differ with respect to vacancy compensation. They exhibit strongly overlappi
Publikováno v:
Journal of applied physics
Unlike the photographically important silver halides, large NaCl single crystals can be grown from solution. In such NaCl crystals, with doping comparable to practical AgCl and AgBr microcrystals, three stable Rh centers were detected and studied by
Publikováno v:
physica status solidi (b). 196:213-229
The ENDOR data of O−2 in RbBr and KBr are compared with the ones in KCl for which two different types of O−2 ions were reported earlier. Interactions with the nearest neighbour alkali ions could be detected. The corresponding hyperfine and nuclea
Publikováno v:
Physical Review B. 54:1145-1152