Zobrazeno 1 - 10
of 174
pro vyhledávání: '"B. Gauthier-Roy"'
Publikováno v:
Journal of Molecular Spectroscopy. 220:201-208
Low temperature (5 K) high resolution (0.15 and 0.03 cm−1) absorption spectra of 13CO2 have been recorded in neon, argon, krypton, and xenon matrices, in the ν3 and ν2 regions. Diffusion experiments have been performed in krypton and xenon in ord
Publikováno v:
The Journal of Chemical Physics. 117:4436-4447
The ν3 vibrational mode of 13CO2, trapped in a rare gas matrix, is excited by a laser pulse near 2300 cm−1. Emission is then observed in the 16 μm region and assigned to three transitions: namely, 3ν21-2ν20, 3ν21-2ν22, and 2ν20-ν21, which a
Publikováno v:
Scopus-Elsevier
We present here results concerning the first attempt of determining the trapping site structure of molecules isolated in inert matrices at low temperature by the EXAFS (Extended X-ray Absorption Fine Structure) method. The experiments have been perfo
Publikováno v:
Journal of Molecular Structure. 484:145-159
A molecular mechanics method using interaction potentials fitted on “Symmetry Adapted Perturbation Theory” calculations is applied to the determination of some structural and vibrational properties of interacting CO and CO 2 species, either in ga
Autor:
B. Gauthier-Roy, Claudine Crépin, A.-M. Flank, Renaud Delaunay, B. Tremblay, S. Varin, M. Pompa, P. Roubin
Publikováno v:
The Journal of Chemical Physics. 109:7945-7948
We present here an EXAFS (extended x-ray absorption fine structure) experiment performed at the K edge of the sulfur atom of OCS isolated in an argon matrix. The aim was to elucidate the structure of the trapping site of the molecule. We show that th
Publikováno v:
The Journal of Chemical Physics. 108:8541-8549
A time resolved infrared–infrared double resonance technique is used to study the vibrational relaxation of O3 in rare gas and nitrogen matrices. A tunable infrared (IR) pulsed source excites the ν1+ν3 level of O3 in the ground electronic state.
Autor:
H. Chabbi, L. Abouaf-Marguin, H. Dubost, Pierre-Richard Dahoo, B. Gauthier-Roy, M. Broquier, A.-M. Vasserot, J. M. Berset, J.M. Ortega, R. Kolos, A. Tramer
Publikováno v:
Chemical Physics Letters. 285:252-258
Laser excitation of the ν 3 ( v =1) level of 13 CO 2 in solid argon is found to induce strong ( ν 1 + ν 2 , 3 ν 2 )→( ν 1 , 2 ν 2 ) and ( ν 1 , 2 ν 2 → ν 2 ) emissions in the 16 μm spectral region. Their sharp threshold in function of t
Publikováno v:
The Journal of Chemical Physics. 105:10092-10098
In a previous work, experimental evidence for different conformations of the weakly bonded CO:CO2 complex has been given in argon matrices, from the analysis of FTIR absorption spectra. A spontaneous interconversion occurs between a high frequency fo
Publikováno v:
Scopus-Elsevier
The CO:CO2 complex in argon matrices is identified near the CO absorption which appears at 2138.49 cm−1, slightly shifted from the pure argon value of 2138.64 cm−1, because of the presence of CO2. It exhibits two features on each side of the CO f
Publikováno v:
The Journal of Chemical Physics. 101:7337-7341
A strong IR fluorescence is observed following the excitation of O3 at the ν1+ν3 mode in xenon matrices. The emission frequency is characteristic of the 2ν3 to ν3 transition. The rise time and the decay time are both faster than a few nanoseconds