0000000000235008

AUTHOR

Matthias Baron

showing 3 related works from this author

Mesoscopic structure of marble determined by combined USANS and SANS

2006

Marbles, carbonatic (i.e. calcitic–dolomitic) rocks deriving from the metamorphic evolution of previous carbonates, are often rather similar to each other in many respects (i.e. mineralogical, physical–structural and chemical), and thus difficult to identify. In search for a diagnostic method to provenance marbles, we have selected a limited number of Italian white marbles representing a wide array of metamorphic (i.e. thermal) levels. The mesoscale structural arrangement of these samples was derived by means of combined Ultra Small Angle and Small Angle Neutron Scattering experiments. The parameters of the model used to fit the data have been correlated with the metamorphic history of the …

Nuclear and High Energy PhysicsMesoscopic physicsProvenanceDiagnostic methodsNuclear Energy and EngineeringMetamorphic rockStructure (category theory)MineralogySmall-angle neutron scatteringGeology
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Structural investigation of hybrid nanocomposites

2002

Ultra small (USANS) and small angle neutron scattering (SANS) techniques were employed to study an elastomer styrene–butadiene, where two kinds of silica fillers have been added in different amounts. Small silica-particle fillers are expected to modify morphological and mechanical properties when dispersed in the copolymer matrix. The USANS and SANS techniques can span a wide range of momentum transfer, investigating morphological properties of the filled elastomer over a number of decades in length scale. Surface and mass fractal behavior has been observed over different length scales.

Length scaleMaterials scienceNanocompositeMomentum transferGeneral ChemistryElastomerSmall-angle neutron scatteringMatrix (geology)Condensed Matter::Soft Condensed MatterCondensed Matter::Materials ScienceFractalCopolymerGeneral Materials ScienceComposite materialApplied Physics A: Materials Science & Processing
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Scattering studies of large scale structures at the ultra small angle neutron scattering instrument S18

2002

Abstract In recent years ultra small angle neutron scattering (USANS) has developed into a powerful standard method for large scale structure investigations. The upgraded instrument S18 at the ILL's 58 MW high flux reactor is operated routinely with increasing beam time demand. The performance of the instrument and its abilities will be discussed in this paper. A peak to background ratio better than 10 5 is reached using Agamalian's tail reduction method. A q -range from 2.10 −5 up to 5.10 −2 A −1 can be covered. This allows a clear overlap with standard pinhole SANS instruments. The new way collecting scattering data logarithmically equidistant in q -space saves measuring time. This allows…

Statistics and ProbabilityRange (particle radiation)Materials scienceScatteringbusiness.industryCondensed Matter PhysicsSmall-angle neutron scatteringOpticsFractalPinhole (optics)EquidistantSoft matterbusinessBeam (structure)Physica A: Statistical Mechanics and its Applications
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