title: The high-resolution absorption spectroscopy branch on the VUV beamline DESIRS at SOLEIL.
abstract: A VUV absorption spectroscopy facility designed for ultra-high spectral resolution is in operation as a dedicated branch on the DESIRS beamline at Synchrotron SOLEIL. This branch includes a unique VUV Fourier transform spectrometer (FTS) and a dedicated versatile gas sample chamber. The FTS instrument can cover a large UV-VUV spectral range from 4 to 30 eV, with an ultimate line width of 0.08 cm(-1) on a large spectral window, ΔE/E = 7%, over which all spectral features can be acquired in a multiplex way. The performance can be considered to be a middle ground between broadband moderate-resolution spectrometers based on gratings and ultra-high-spectral-resolution VUV tunable-laser-based techniques over very narrow spectral windows. The various available gaseous-sample-handling setups, which function over a wide range of pressures and temperatures, and the acquisition methodology are described. A selection of experimental results illustrates the performance and limitations of the FTS-based facility.
authors.affiliation: Ligne DESIRS, Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France.
authors.forename: Nelson
authors.initials: N
authors.lastname: de Oliveira
authors.affiliation: Ligne DESIRS, Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France.
authors.forename: Denis
authors.initials: D
authors.lastname: Joyeux
authors.affiliation: Ligne DESIRS, Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France.
authors.forename: Mourad
authors.initials: M
authors.lastname: Roudjane
authors.affiliation: Ligne DESIRS, Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France.
authors.forename: Jean François
authors.initials: JF
authors.lastname: Gil
authors.affiliation: Ligne DESIRS, Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France.
authors.forename: Bertrand
authors.initials: B
authors.lastname: Pilette
authors.affiliation: Ligne DESIRS, Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France.
authors.forename: Lucy
authors.initials: L
authors.lastname: Archer
authors.affiliation: Ligne DESIRS, Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France.
authors.forename: Kenji
authors.initials: K
authors.lastname: Ito
authors.affiliation: Ligne DESIRS, Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France.
authors.forename: Laurent
authors.initials: L
authors.lastname: Nahon
keywords: Fourier spectroscopy; VUV beamline; absorption spectroscopy; high spectral resolution