 Description
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SIRIUS takes advantage of the best energy range of the SOLEIL synchrotron ring between 1.4 and 11 keV in order to provide a tool for structural study to two large communities of condensed matter:
soft interfaces (air/ water interface, Langmuir monolayers, Langmuir-Blodgett, self assembled organic films, liquid crystal interfaces, biomimetic systems …) and semiconductor or magnetic nanostructures (III-V materials for optoelectronics and photovoltaics, quantum wells and dots, metal and oxide magnetic multilayers). This beamline is optimized for diffraction (GIXD), scattering (GISAXS) and fluorescence in grazing incidence condition with horizontal samples at fixed energy (8, 10keV) but also for resonant or anomalous scattering at absorption edges of interesting elements both for soft matter (Ca, Cl, Cd, S, P, K …), magnetism (L-, M- edges of 4d-5d elements, K-edges of 3d), and semiconductors (K-edges of P, Si, Al, L-edges of In, Sb). The beamline will be equipped with a large and accurate diffractometer in order to host cumbersome dedicated sample environments.
The selected undulator source will enable to vary the polarization of the x-ray beam from horizontal to circular or vertical. It is also planned to use the large spatial coherence of the x-ray beam expected with such “tender” energy (2-4keV).
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Technical data
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| Energy range | | 1.4-11 keV (0.6 – 0.1nm) ~1.5 µm and 50 µm
| | Energy Resolution (ΔE/E) | | ΔE/E ~ 10-4 with two crystals monochromator (Si 111)
ΔE/E ~ 10-3 with a grating-multilayer monochromator.
| | Source | | Apple II HU34 (to be confirmed)
| Flux at the first optical element
| | 2.1014ph/s/0.1%bw @ 8keV | | Optics | | - Two crystals monochromator (Si 111 and InSb 111) for linear polarization (1.7-11 keV),
- Multilayer Grating monochromator for circular and vertical polarization (1.4-4 keV),
- Three mirrors (focalisation, harmonic rejection),
- Deflection mirror.
| | Sample Environment | | - 6 circles diffractometer with large space to host dedicated and cumbersome sample environment.
- Langmuir through + Brewster Angle Microscope (BAM)
- Solid sample chamber
| | Flux on sample | | - 1013 ph/s @ 8kev (600x1400µm2, 7x37µrad2) with Si 111
- 2 1013 ph/s @ 2kev (1000x1700µm2, 7x54µrad2) with Si 111
- 5 1013 ph/s @ 2kev with grating
| | Detectors | | - One dimensional (solid),
- Fluorescence (silicon drift),
- Gas filled position sensitive detector (PSD) with energy analysis,
- 2D Camera.
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Scientific Opportunities
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| Soft Condensed Matter – Soft Interfaces | | - Liquid – air interface,
- Langmuir monolayers,
- Langmuir Blodgett, self assembled organic films,
- Polymers at interfaces,
- Surfactants,
- Liquid crystals, liquid crystals interfaces,
- Biomimetic systems,
- Free or supported membranes,
- Surface chemistry,
- Mesophases, thin layers …
| Biology,
Biomaterial
| | Biomimetic systems
- Interactions model membranes – biological molecules (drugs, proteins, …),
- Biomineralization.
| | Semiconductor nanostructures | | - III-V epitaxial thin films, quantum wells/wires/dots, nanostructures (Grazing-Incidence Diffraction Anomalous Fine-structure Spectroscopy). - III-V semiconductor alloys for optoelectronics and photovoltaics
| | Magnetism | | - Magnetic Multilayers, Periodic magnetic nanostructures (X-ray Resonant Magnetic Scattering at L/M edges of 4d/5d metals) - Magnetic Oxides, Manganites - Dilute Magnetic Semiconductors
| | "Tender" Interfaces | | - Physics of Silicon and Aluminium Interfaces (X-ray Resonant Reflectivity, Reflexafs, Tender-energy X-ray diffraction) - Crystalline Oxides on Silicon, Organic functionalization of Si - P, Si doping in semiconductors, Al-based barrier layers
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Beamline Status : Operational 2008
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Contacts
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Philippe Fontaine
(Principal beamline scientist)
| Tel: +33 (0)1-69 35 96 67 | philippe.fontaine@synchrotron-soleil.fr | Synchrotron SOLEIL
L'Orme des Merisiers
Saint-Aubin - BP48
91192GIF-sur-YVETTE CEDEX | Fax : +33-(0)1-69 35 94 56 | |
Gianluca Ciatto
(Beamline scientist)
| Tel: +33 (0)1-69 35 97 67 | gianluca.ciatto@synchrotron-soleil.fr | Synchrotron SOLEIL
L'Orme des Merisiers
Saint-Aubin - BP48
91192 GIF-sur-YVETTE CEDEX | Fax : +33-(0)1-69 35 94 56 | |
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Employment
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Click here to access to the SOLEIL employment web page
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