Commissariat a L'energie Atomique

Centre National De La Recherche Scientifique

Patrick Francois Baroni

Laurence Marie Noirez

Hakima Mendil

This invention relates to a two-dimensional detection system for neutron radiation comprising a means () for emitting a neutron beam (), a support means () adapted for receiving a sample (), a photoemission means () adapted for being activated by a neutron radiation, a cooled low light level charge-coupled detection device (). The emission means () emits a monochromatic neutron beam (). The system further comprises a filter means (), the filter means () being located between the support means () and the photoemission means () and being adapted for trapping at least a substantial part of the monochromatic neutron beam transmitted () by the sample (), and an amplification means () located upstream the charge-coupled detection device () and coupled with the charge-coupled detection device ().

Two-dimensional detection system for neutron radiation in the field of neutron scattering spectrometry

Method of determining at least one dynamic characteristic of a sample of a deformable solid or fluid material, comprising: the contacting of said sample () with at least one interaction surface (); the application of a relative movement between said sample () and said interaction surface (); and the measurement () of at least one dynamic or kinematic quantity in respect of the sample () and/or said interaction surface (), wherein said interaction surface () has an intrinsic wettability with respect to the material that is higher than that of metals. Device for implementing this method. According to particular embodiments, said interaction surface () is made of high-density sintered ceramic or made of single crystal silicon or germanium, preferably having a zero open porosity and an arithmetic mean roughness parameter of less than 12.5 &#x3bc;m and preferably between 0.4 and 1.6 &#x3bc;m.

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Les Ulis, France

Patrick Francois Baroni