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Neutrons
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Neutron diffusion make possible to probe the matter and its sensitivity to the light elements and to magnetism make it a single and original probe. Within IRAMIS, neutron spectrometry is used in various fields in fundamental and applied research and is developed around the CEA-CNRS Laboratory Leon Brillouin (LLB) around the Orphée reactor in Saclay. Neutrons are mainly intended for the study of condensed matter. The scientific activity of the laboratory belongs to three sectors of equal importance: physicochemistry, structural studies and phase transitions, magnetism and supraconductivity.

 

Last update : 08/29 2018 (892)

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 Neutron Scattering on Magnetic Nanostructures (150 pages - 10Mo)   The PRISM reflectometer   Data processing and simulation programs   Documentation on reflectivity and associated techniques   Collaborations Local contact : Frederic Ott
Various news in connection with CANS (Compact Accelerator neutron Source)
2019 The LLB is organizing the UCANS-8 conference in Paris,  2018 4th Workshop on High Brilliance Neutron Sources 2018 (HBS 2018), Unkel, october 4-5th 2018
General documents and overviews about CANS
Presentations at workshops or conferences 2018 Presentation on "Neutron Scattering on Compact Neutron Sources", TU Delft, February 2018.
Operating, under commissionning or in project CANS sources across the world
The improvement of the mechanical properties of polymer films by inclusion of mineral particles is a well known industrial practice used since the end of the XIX century.
Using conjugated polymers as the active materials in electronic and optoelectronic devices opens up the possibility of fabricating all-polymer devices using solution processing technologies.
Light-harvesting antennae are pigment-protein complexes involved in light-absorption and excitation energy transfer (EET) to the so-called "reaction center" complexes, where the photochemical processes of photosynthesis take place.
The strongly interacting conduction electrons can be accurately represented as a gas of weakly interacting electron-like excitations. This description, known as Fermi liquid theory, works for many metallic systems.
Hidden degrees of freedom in aperiodic crystals.
Following the synthesis by the ribosome, to carry out its biological function, a protein much fold into a single, well defined conformational state: the native state.
This study investigates the long term behavior of glasses used for confinement of nuclear wastes. The results have been obtained from a fruitful collaboration between different CEA laboratories (LLB, LIONS, CEA Marcoule) and the Ecole Polytechnique.
BiFeO3 is a multiferroic materials in which ferroelectric and anti-ferromagnetic orders coexist well above room temperature (TN=643 K, TC=1093 K), with a high polarization (over 100 μC/cm2 [1]).
In 1893 Sir William Armstrong reported a remarkable experiment: if a high voltage is established between two wine-glasses filled to the brim with pure water and connected by a cotton  thread, a rope of water is formed and remains suspended between the lips of the two glasses.
The use of agricultural resources for industrial purposes will undoubtly be one of the major challenges of the 21 st century. Organic biosynthons used in chemistry should progressively replace those coming from fossil fuels.
The concept of "spin ladder" originally appeared to study the theoretically still controversial antiferromagnet (AF) 2D square lattice in high temperature superconducting cuprates starting from a well understood 1D AF chain [1-2].
This work is part of a theoretical project which aims to unravel the mechanism at work in the high temperature cuprate superconductors.
The pseudogap region of the phase diagram is an important unsolved puzzle in the field of hightransition-temperature (Tc) superconductivity, characterized by anomalous physical properties below a certain temperature, T*[1].

 

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