Zobrazeno 1 - 10
of 93
pro vyhledávání: '"R.C. Karnatak"'
Often, a new area of science grows at the confines between recognised subject divisions, drawing upon techniques and intellectual perspectives from a diversity of fields. Such growth can remain unnoticed at first, until a characteristic fami ly of ef
Autor:
M Womes, A El Afif, R.C. Karnatak, Cristian M. Teodorescu, Anne-Marie Flank, J.M. Esteva, P. Lagarde
Publikováno v:
Scopus-Elsevier
Na and NaF clusters were investigated by Na 1s edge excitation using synchrotron radiation provided by the Super Aco storage ring in Orsay. The Na cluster spectra show a close resemblance to the solid Na spectrum which consists essentially in an abso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c76eb899dd37c804023aa416e1f6ae3
https://doi.org/10.1016/s0368-2048(99)00080-8
https://doi.org/10.1016/s0368-2048(99)00080-8
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 30:4293-4313
We give an analytical estimate of the function representing the convolution of the Beutler - Fano profile and a Gaussian, assumed to be responsible for the instrumental response function. From the fitting of the single-excitation spectrum, we estimat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::095f5f2182a200aa71098c5f62f4f546
https://doi.org/10.1088/0953-4075/30/19/018
https://doi.org/10.1088/0953-4075/30/19/018
Autor:
G. Allan, J.M. Esteva, I. Lefebvre, R.C. Karnatak, M Womes, Jean-Claude Jumas, J. Olivier-Fourcades
Publikováno v:
Journal of Physics and Chemistry of Solids. 58:345-352
The band structures of FeS and FeS 2 including the S 3 s and 3 p and the Fe 3 d and 4 s states are calculated in the tight-binding approach. In the case of FeS, magnetic ordering is taken into account. The Fe K , Fe L 2,3 , and S K X-ray absorption e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94931b91b8a9e5856a2247f60589587e
https://doi.org/10.1016/s0022-3697(96)00068-6
https://doi.org/10.1016/s0022-3697(96)00068-6
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 345:141-147
An analytical expression of the Voigt integral, derived by numerical methods, is proposed. It spans a wide range in X-ray spectral region in which the Lorentzian broadening of atomic origin and the Gaussian (instrumental) broadenings are of comparabl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e563f576121d58423431c06b90ae9641
https://doi.org/10.1016/0168-9002(94)90983-0
https://doi.org/10.1016/0168-9002(94)90983-0
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 26:4019-4039
The authors investigate the contribution of the unseparated Rydberg states which are usually neglected, in atomic K-edge X-ray spectra. They suppose that the core hole broadening is large, so that the global contribution of all unresolved Rydberg lev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebf3ff42ab700ec7ee7ac4a13bb2fb6b
https://doi.org/10.1088/0953-4075/26/22/009
https://doi.org/10.1088/0953-4075/26/22/009
Autor:
R.C. Karnatak
Publikováno v:
Journal of Alloys and Compounds. 192:64-68
The 4f and sd conduction states of the rare earth atoms in the fluorite-related intermediate rare earth oxides RO x (R Ce, Pr, Tb; 1.5 ⩽ x ⩽ 2) were studied by X-ray absorption spectroscopy. The spectra thus obtained reveal the presence of on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86d29a173cdd7fcbbb00e1c2772ccd89
https://doi.org/10.1016/0925-8388(93)90187-r
https://doi.org/10.1016/0925-8388(93)90187-r
Autor:
I. Lefebvre, J.-M. Esteva, Pierre-Emmanuel Lippens, Michel Lannoo, Jean-Claude Jumas, M. Womes, J. Olivier-Fourcade, R.C. Karnatak
Publikováno v:
ChemInform. 24
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28d1a491c4b213d6c3f1c58853d7ef08
https://doi.org/10.1002/chin.199321017
https://doi.org/10.1002/chin.199321017
Autor:
F. Py, Jean-Olivier Durand, R.C. Karnatak, Manfred Womes, Josette Olivier-Fourcade, Jean-Claude Jumas, J.-M. Esteva
Publikováno v:
Journal of Alloys and Compounds. 178:297-304
A study of the In2S3Cu2SCuS system has shown the existence of a solid solution range with the In2S3 vacant spinel crystal structure. An X-ray diffraction study has allowed the identification of two redox processes in the formation of solid solu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67d0c895f89178a772e0e04dec173e8c
https://doi.org/10.1016/0925-8388(92)90271-a
https://doi.org/10.1016/0925-8388(92)90271-a
Publikováno v:
Zeitschrift f�r Physik D Atoms, Molecules and Clusters. 21:357-366
TheK absorption edge of Si in matrix isolated SiO molecular clusters was studied for various dilutionsR(Ar/SiO). The spectra from the clusters at different dilutions show a dramatic evolution in their relative intensity. Two types of spectral feature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcee222c6b5e3992168e7f2a583ac100
https://doi.org/10.1007/bf01438409
https://doi.org/10.1007/bf01438409