Zobrazeno 1 - 10
of 38
pro vyhledávání: '"J. C. Gâcon"'
Publikováno v:
Optics and Spectroscopy. 104:345-350
The microwave-cavity-based technique is used to study the processes of photoionization of electrons from donor levels to the conduction band in semiconductor CdF2 crystals doped with Y, In, or Ga. The samples were excited by periodic pulses of Nd-las
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e7771944f41b472694159ba9db942af
https://doi.org/10.1134/s0030400x08030065
https://doi.org/10.1134/s0030400x08030065
Publikováno v:
Optical Materials. 30:26-29
Photoconductivity and trapping effects were studied in various Ce-doped scintillating crystals (LSO, LYSO, YSO and LPS) by means of the microwave resonant cavity technique. In all the investigated crystals, at 300 K and under 355 nm excitation, trans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8738e06a65d7e507d33d120d8a219816
https://doi.org/10.1016/j.optmat.2006.11.014
https://doi.org/10.1016/j.optmat.2006.11.014
Publikováno v:
Optical Materials. 28:35-40
Transient photoconductivity induced by UV (355 nm) laser pulses in doped dielectric crystals CaF 2 :Sm 2 + , CaF 2 :Eu 2 + and LSO:Ce 3 + was studied by 8-mm microwave technique in a wide range of temperatures, from 300 K down to 5 K. It was possible
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::776cca03d1b8d272dded240637598033
https://doi.org/10.1016/j.optmat.2004.11.054
https://doi.org/10.1016/j.optmat.2004.11.054
Publikováno v:
Optical Materials. 28:14-20
The optical properties of Pr 3+ ions in cyclotetraphosphates M 1 PrP 4 O 12 (M 1 = Cs, Rb), cyclotriphosphate PrP 3 O 9 · 3H 2 O and diphosphate NaPrP 2 O 7 have been investigated. Emission spectra under selective laser excitation in the 3 P J multi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8895bdea59e7d7275fef35d0e62c4b7a
https://doi.org/10.1016/j.optmat.2004.10.027
https://doi.org/10.1016/j.optmat.2004.10.027
Autor:
Yannick Guyot, G. Panczer, Christelle Goutaudier, A. Bensalah, M. Ito, Georges Boulon, J. C. Gâcon
Publikováno v:
Molecular Physics. 102:1119-1132
A spectroscopic characterization was carried out to identify crystal-field levels for magnetic-dipole transitions of Yb3+ ions located in the Y3+ dodecahedral S4 crystallographic site in YLiF4 (YLF) crystals which were grown either by the Czochralski
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::777732d288ce387aee0f7fe4c94569a1
https://doi.org/10.1080/00268970410001728816
https://doi.org/10.1080/00268970410001728816
Publikováno v:
Optical Materials. 24:137-141
A new technique is presented for measuring the location of the rare earth energy levels with respect to the host conduction band in rare earth doped insulators. This technique is based on the detection of microwave absorption by the rare earth doped
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50b13508503b081805f09dc3f8a447f4
https://doi.org/10.1016/s0925-3467(03)00117-4
https://doi.org/10.1016/s0925-3467(03)00117-4
Autor:
Mokhtar Férid, M. Trabelsi-Ayedi, Nicolas Garnier, Christophe Dujardin, J C Gâcon, Karima Horchani
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 486:283-287
Single crystals of CsPrP 4 O 12 and RbPrP 4 O 12 cyclotetraphosphates have been grown using the flux method. Selective excitations in the Pr 3+ (4f 2 ) 3 P 0 and 3 P 2 levels using an excimer-pumped dye laser mainly result in intense line emissions i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3709c391bf13ed625bd4fd07f22e32e
https://doi.org/10.1016/s0168-9002(02)00719-2
https://doi.org/10.1016/s0168-9002(02)00719-2
Autor:
Karima Horchani, Mokhtar Férid, M. Trabelsi-Ayedi, Christophe Dujardin, Nicolas Garnier, C. Garapon, J C Gâcon
Publikováno v:
Journal of Luminescence. :69-72
Single crystals of CsPrP 4 O 12 and RbPrP 4 O 12 cyclotetraphosphates have been grown using the flux method. Selective excitations in the Pr 3+ (4f 2 ) 3 P 0 and 3 P 2 levels using an excimer-pumped dye laser mainly result in intense line emissions i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0920896858fdb3bed53da35102c6f07b
https://doi.org/10.1016/s0022-2313(01)00249-6
https://doi.org/10.1016/s0022-2313(01)00249-6
Publikováno v:
Journal of Physics: Condensed Matter. 13:735-741
We used coherent anti-Stokes Raman scattering (CARS) spectroscopy to study the symmetry of the low-lying levels of the Sm2+ ion doped in sites of cubic (Oh) symmetry in the SrF2 and CaF2 matrices. Taking advantage of the polarization sensitivity of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2017b36d9c79b3f32298cfbf4bb63fd8
https://doi.org/10.1088/0953-8984/13/4/319
https://doi.org/10.1088/0953-8984/13/4/319
Autor:
O.W.V. Frijns, R. Chen, An Fremout, Christophe Dujardin, C.W.E. van Eijk, Pieter Dorenbos, Peter Bruyndonckx, Ashot Petrosyan, J.C. van't Spijker, C. Pedrini, F. Tallouf, J C Gâcon, Stefaan Tavernier, Wilfried Blanc
Publikováno v:
Journal of Physics: Condensed Matter. 10:3061-3073
The system has been shown to be a promising scintillator for medical imaging devices. Recently, efforts were focused on the improvement of its scintillating properties. Several large crystals with various cerium concentrations were grown. Absorption
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06b6c16e1f96dacb0badb642b2f35ad1
https://doi.org/10.1088/0953-8984/10/13/022
https://doi.org/10.1088/0953-8984/10/13/022