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of 56
pro vyhledávání: '"Xavier Gerbaux"'
Autor:
Xavier Gerbaux
Publikováno v:
18th International Conference on Infrared and Millimeter Waves.
Autor:
Xavier Gerbaux, Armand Hadni
Publikováno v:
International Journal of Infrared and Millimeter Waves. 22:1549-1554
New experiments show that the solution of the complicated problem of Far Infrared (FIR) absorption by crystals of very low symmetry, illuminated at quasi-normal incidence, might have a simple solution, which has been suggested now that a number of sp
Autor:
Xavier Gerbaux, Armand Hadni
Publikováno v:
Ferroelectrics. 248:15-26
In the parts of the Far IR (FIR) spectrum where Ferroelectric Triglycine Sulphate (TGS) is transparent for a given direction of the electric vector , the forced transverse vibrations that can be excited in that direction are shown to couple slightly
Autor:
Armand Hadni, Xavier Gerbaux
Publikováno v:
International Journal of Infrared and Millimeter Waves. 21:149-154
Many sharp lines in the Far IR transmission spectra of thick crystal plates of Triglycine Sulphate (TGS), should not be ascribed to Transversal Optics (TO) vibration, excited by the electric vector of the electromagnetic (em) wave, but perhaps to Lon
Publikováno v:
Ferroelectrics. 215:47-63
New measurements with a special cryostat, and a high resolution grid interferometer show that TGS exhibits Far Infrared (FIR) oscillations at θ = 5K with much smaller damping coefficients (δ = δv/v), than previously described (Gerbaux, X. and Hadn
Publikováno v:
International Journal of Infrared and Millimeter Waves. 19:1155-1173
A thin film of NbN (thickness t = 300 A), has been deposited on an MgO and a Si wafer. Both samples have been studied by transmission from 10 or 20 to 120 cm−1, and have exhibited one maximum of transmission at a given frequency like the classical
Publikováno v:
Scopus-Elsevier
The entire vibrational spectrum of a single crystal of l -histidinium dihydrogen orthophosphate orthophosphoric acid (LHP) was studied by infrared (IR) spectroscopy from 10 up to 4000 cm −1 . The polarized infrared (IR) reflectivity spectra were me
Publikováno v:
International Journal of Infrared and Millimeter Waves. 18:1611-1635
The different technical approaches are considered mostly to compare the accuracy attainable in microwaves to Far IR where new resonant tchniques have been developped. It is possible to use the fringes of the observed spectra to get directly the Londo
Publikováno v:
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics-Physics-Chemistry-Astronomy. 324:389-397
Resume L'etude de la transmission dans l'IR lointain de NbN, supraconducteur classique, avec un maximum de transmission correspondant au gap, est moins difficile que celle du nouveau supraconducteur YBa2Cu3C)7−δ. Pour celui-ci, les pouvoirs de tra
Publikováno v:
Ferroelectrics. 193:51-62
The crystal structure determination of a deuterated triglycine sulfate single crystal has been carried out at 180 and 40 K by neutron diffraction (λ = 0.8332 A). The space group P21 is not modified by lowering the temperature. Thermal parameters are