Luca Lutterotti
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View article: Rietveld Refinement of Electron Diffraction Patterns of Nanocrystalline Materials Using MAUD: Two-Beam Dynamical Correction Implementation and Applications
Rietveld Refinement of Electron Diffraction Patterns of Nanocrystalline Materials Using MAUD: Two-Beam Dynamical Correction Implementation and Applications Open
Nanocrystalline (NC) materials have widespread industrial usage. X-ray and neutron diffraction techniques are primary tools for studying the structural and microstructural features of NC materials. Selected area electron diffraction (SAED)…
View article: Demonstration of neutron time-of-flight diffraction with an event-mode imaging detector
Demonstration of neutron time-of-flight diffraction with an event-mode imaging detector Open
Neutron diffraction beamlines have traditionally relied on deploying large detector arrays of 3 He tubes or neutron-sensitive scintillators coupled with photomultipliers to efficiently probe crystallographic and microstructure information …
View article: The pros or cons of X-ray diffraction vs electron beam techniques in the assessment of mineral assemblages: improvements of Solsa combined XRD-XRF analyses applied to the Grande Cote Operation Ti-Zr mine, Senegal.
The pros or cons of X-ray diffraction vs electron beam techniques in the assessment of mineral assemblages: improvements of Solsa combined XRD-XRF analyses applied to the Grande Cote Operation Ti-Zr mine, Senegal. Open
Mine optimisation and anticipation of ore behaviour in the mineral processing and separation circuits are major economic drivers for all mining operation. Recent methodological developments with the inception of geometallurgy across multip…
View article: Fast and Cost-Effective Quantitative Assessment of the Chemical and Mineral Composition of Heavy Mineral Sands Ores: Application of the New SOLSA Combined XRF-XRD Analytical Solution to the Grande Cote Operation Ti-Zr Mine
Fast and Cost-Effective Quantitative Assessment of the Chemical and Mineral Composition of Heavy Mineral Sands Ores: Application of the New SOLSA Combined XRF-XRD Analytical Solution to the Grande Cote Operation Ti-Zr Mine Open
Mine optimisation and anticipation of ore behaviour in the mineral processing and separation circuits are major economic drivers for all mining operations. Recent methodological developments with the inception of geometallurgy across multi…
View article: Texture measurements on quartz single crystals to validate coordinate systems for neutron time-of-flight texture analysis
Texture measurements on quartz single crystals to validate coordinate systems for neutron time-of-flight texture analysis Open
In crystallographic texture analysis, ensuring that sample directions are preserved from experiment to the resulting orientation distribution is crucial to obtain physical meaning from diffraction data. This work details a procedure to ens…
View article: <i>MILK</i>: a Python scripting interface to <i>MAUD</i> for automation of Rietveld analysis
<i>MILK</i>: a Python scripting interface to <i>MAUD</i> for automation of Rietveld analysis Open
Modern diffraction experiments ( e.g. in situ parametric studies) present scientists with many diffraction patterns to analyze. Interactive analyses via graphical user interfaces tend to slow down obtaining quantitative results such as lat…
View article: 32-Channel silicon strip detection module for combined X-ray fluorescence spectroscopy and X-ray diffractometry analysis
32-Channel silicon strip detection module for combined X-ray fluorescence spectroscopy and X-ray diffractometry analysis Open
A compact detection module for the simultaneous measurement of XRF and XRD in portable analytical applications, in particular in the mining sector, is presented. The detector head is based on 32 silicon strip detectors, fabricated with a l…
View article: Electron diffraction characterization of nanocrystalline materials using a Rietveld-based approach. Part I. Methodology
Electron diffraction characterization of nanocrystalline materials using a Rietveld-based approach. Part I. Methodology Open
Transmission electron microscopy is a powerful experimental tool, very effective for the complete characterization of nanocrystalline materials by employing a combination of imaging, spectroscopy and diffraction techniques. Electron powder…
View article: Raman Open Database: first interconnected Raman–X-ray diffraction open-access resource for material identification
Raman Open Database: first interconnected Raman–X-ray diffraction open-access resource for material identification Open
Detailed crystallographic information provided by X-ray diffraction (XRD) is complementary to molecular information provided by Raman spectroscopy. Accordingly, the combined use of these techniques allows the identification of an unknown c…
View article: Full-profile search–match by the Rietveld method
Full-profile search–match by the Rietveld method Open
A new search–match procedure has been developed and tested which, in contrast to previously existing methods, does not use a set of lines identified from a diffraction pattern, but an optimized Rietveld fitting on the raw data. Modern comp…
View article: Effect of Processing and Orientation on Structural and Mechanical Properties of Polypropylene Products
Effect of Processing and Orientation on Structural and Mechanical Properties of Polypropylene Products Open
Polypropylene (PP) represents one of the most worldwide used plastics with a large variety of products and applications. As usual for semicrystalline polymers,
\nthe properties of PP products strictly depend on the processing (fiber spinni…
View article: Sonic drilling coupled with on-line-on-mine-analyses: field tests at the Villeveyrac bauxite deposit (Southern France)
Sonic drilling coupled with on-line-on-mine-analyses: field tests at the Villeveyrac bauxite deposit (Southern France) Open
The field tests of the SOLSA expert system at the bauxite mine (SODICAPEI-VICAT, South France, 15th to 30th September 2018) aimed to evaluate the workflow and individual instrumental parameters, mechanics of the drill rig, the core scanner…
View article: Mineralogical investigations using <scp>XRD</scp>, <scp>XRF</scp>, and Raman spectroscopy in a combined approach
Mineralogical investigations using <span>XRD</span>, <span>XRF</span>, and Raman spectroscopy in a combined approach Open
The identification of mineralogical phases in drill cores is one of the most challenging tasks in the mining activity in view of an efficient metal extraction. This process requires the analytical characterization of large volumes of mater…
View article: Efficient long-term open-access data archiving in mining industries
Efficient long-term open-access data archiving in mining industries Open
Efficient data collection, analysis and preservation are needed to accomplish adequate business decision making. Long-lasting and sustainable business operations, such as mining, add extra requirements to this process: data must be reliabl…
View article: 3D Imaging on heterogeneous surfaces on laterite drill core materials
3D Imaging on heterogeneous surfaces on laterite drill core materials Open
The SOLSA project aims to construct an analytical expert system for on-line-on-mine-real-time mineralogical and geochemical analyses on sonic drilled cores. A profilometer is indispensable to obtain reliable and quantitative data from RGB …
View article: Preferred Orientation Contribution to the Anisotropic Normal State Resistivity in Superconducting Melt-Cast Processed Bi2Sr2CaCu2O8+δ
Preferred Orientation Contribution to the Anisotropic Normal State Resistivity in Superconducting Melt-Cast Processed Bi2Sr2CaCu2O8+δ Open
We describe how the contribution of crystallographic texture to the anisotropy of the resistivity of polycrystalline samples can be estimated by averaging over crystallographic orientations through a geometric mean approach. The calculatio…
View article: Characterization of nanograined powder samples using the Rietveld method applied to electron diffraction ring patterns
Characterization of nanograined powder samples using the Rietveld method applied to electron diffraction ring patterns Open
A full-pattern fitting procedure based on the Rietveld method was applied to electron diffraction ring patterns of a two-phase system, exhibiting the co-presence of zinc sulfide (sphalerite) and zinc oxide (Wurtzite). Bright and dark field…
View article: Combined mineralogy and chemistry on drill-cores: challenging for on-line-real-time analyses
Combined mineralogy and chemistry on drill-cores: challenging for on-line-real-time analyses Open
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