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Raman Microspectrometer

par Cédric PARDANNAUD - publié le , mis à jour le

I. Technical characteristics :

-  The technique :
o Inelastic diffusion of photons
o Used to identify a solid or a molecule by interpreting its spectroscopic signature
o Fast and non destructive
o Possibility to integrate spectra with low power (to prevent sample alteration) by moving the sample under the beam during measurement

-  The commercial set-up :
o Labram HR from the Horiba Jobin Yvon company installed in 2008
o Continuous laser sources available (≈mW) : 325 nm, 514 nm, 633 nm
o Gratings : 600, 1800, 2400 lines/mm
o Motorized x,y stage
o Coupling with an optical microscope (micrometric lateral resolution)
o Spectral domain : above 80 cm-1
o Notch filter for stockes/anti-stokes measurement

Microspectromètre Raman

-  Environmental cells for in-situ measurements :
o heating under neutral or O2 atmosphere (Linkam TS1500 : below 200°C.min-1, Tmax=1500°C, 2 bar)
o Catalytic cell for heating under atmosphere (Linkam CCR1000 : below 200°C.min-1, Tmax=1000°C, 5 bar)

II. Examples :

III. Publications containing data acquired with this set-up

A. Ahmad, C. Pardanaud, M. Carrère, J.-M. Layet, G. Cartry, A. Gicquel, P. Kumar, D. Eon, C. Jaoul, R. Engeln
Negative-ion production on carbon materials in hydrogen plasma : Influence of the carbon hybridization state on H- yield
Journal of Physics D-Applied Physics 47 (2014), 085201

C. Pardanaud, C. Martin, P. Roubin
Multiwavelength Raman spectroscopy analysis of a large sampling of disordered carbons extracted from the Tore Supra tokamak
Vibrational Spectroscopy 70 (2014), 187-192

C. Hopf, T. Angot, E. Areou, T. Dürbeck, N. Gehrken, W. Jacob, C. Martin, C. Pardanaud, P. Roubin, T. Schwarz-Selinger
Characterization of temperature-induced changes in amorphous hydrogenated thin films
Diamond and Related Materials 37 (2013), 97

C. Pardanaud, C. Martin, G. Giacometti, P. Roubin, B. Pégourié, C. Hopf, T. Schwarz-Selinger, W. Jacob, J.G. Buijnsters
Long Term H-Release from Amorphous Carbon Evidenced by in Situ Raman Microscopy under Isothermal Heating
Diamond and Related Materials 37 (2013), 92

D. Bardelang, M. Giorgi, C. Pardanaud, V. Hornebecq, E. Rizzato, P. Tordo, O. Ouari
Organic multishell isostructural host-guest crystals : fullerenes C60 inside a nitroxide open framework
Chemical communications 49 (2013), 3519

C. Pardanaud, C. Martin, P. Roubin, G. Giacometti, C. Hopf, T. Schwarz-Selinger, W. Jacob.
Raman spectroscopy investigation of the H content of heated hard amorphous carbon layers
Diamond and Related Materials 34 (2013), 100-104

C. Martin, P. Languille, S. Panayotis, B. Pégourié, H. Roche, C. Pardanaud, G. Giacometti, R. Ruffe, E. Gauthier, X. Courtois, E. Tsitrone, P. Roubin
Erosion-deposition mapping of the toroidal pump limiter of Tore Supra
Journal of nuclear materials 438 (2013), S771-S774

C. Pardanaud, E. Areou, C. Martin, R. Ruffe, T. Angot, P. Roubin, C. Hopf, T. Schwarz-Selinger, W. Jacob
Raman micro-spectroscopy as a tool to measure the absorption coefficient and the erosion rate of hydrogenated amorphous carbon films heat-treated under hydrogen bombardment
Diamond and Related Materials 22 (2012), 92-95

C. Martin, B. Pegourie, R. Ruffe, Y. Marandet, G. Giacometti, C. Pardanaud, P. Languille, S. Panayotis, E. Tsitrone, P. Roubin
Structural analysis of eroded carbon fiber composite tiles of Tore Supra : insights on ion transport and erosion parameters
Physica Scripta T145 (2011), 014024

P. Kumar, A. Ahmad, C. Pardanaud, M. Carrere, J.-M. Layet, G. Cartry, F. Silva, A. Gicquel, R. Engeln
Enhanced negative ion yields on diamond surfaces at elevated temperatures
Journal of Physics D-Applied Physics 44 (2011), 372002

C. Pardanaud, G. Giacometti, C. Martin, R. Ruffe, T. Angot, E. Areou, B. Pegourie, E. Tsitrone, T. Dittmar, C. Hopf, W. Jacob, T. Schwarz-Selinger, P. Roubin
Raman study of CFC tiles extracted from the toroidal pump limiter of Tore Supra
Journal of Nuclear Materials 415, (2011), S254-S257

C. Arnas, C. Pardanaud, C. Martin, P. Roubin, G. De Temmerman, G. Counsell
Analyses of dust samples collected in the MAST tokamak
Journal of Nuclear Materials 401, (2010) 130-137

T. Dittmar, P. Roubin, E. Tsitrone, E. Gauthier, A. Hakola, J. Likonen, F. Linez, C. Martin, M. Mayer, C. Pardanaud, J. Y. Pascal, B. Pasquet, B. Pegourie, J. Roth, I. Roure, R. Ruffe
Deuterium Inventory in Tore Supra : status of post-mortem analyses
Physica Scripta T138, (2009) 014027