Dear Colleague,
We are pleased to open registration for ADD2019, the 4th edition of the School and Conference on Analysis of Diffraction Data in real-space: https://workshops.ill.fr/e/add2019 co-organized by the Institut Laue-Langevin (ILL) and the European Synchrotron (ESRF), and taking place: 17 to 22 March 2019 at the European Photon and Neutron (EPN) campus in Grenoble, France. Building on the positive experience of ADD2011 (12-14 October 2011), ADD2013 (18-22 March 2013) and ADD2016 (7-11 March 2016), the 5-day programme of ADD2019 includes 2-1/2 days for the School followed by 2-1/2 days for the Conference, basically the same format as for ADD2016, but with a few additions. The ADD2019 School and Conference aim to deepen the understanding and to further the training of the various communities working on real-space data analysis for neutron and x-ray diffraction techniques. Fourier transformation of diffraction data into real-space, traditionally used for the structural determination of liquids and glasses, is now increasingly employed for partially-disordered crystalline powder samples, and most recently for spin-spin correlations in disordered or frustrated magnetic systems (in the case of neutron diffraction). The scientific scope of ADD2019 pertains to both x-ray and neutron diffraction techniques, and will again include single-crystal diffuse scattering as an integral part of the School and the Conference. The School proposes pedagogic lectures on real-space data-analysis techniques followed by 7 parallel sessions of hands-on tutorials for training with various data-modelling software packages: DISCUS, PDFgui, DiffpyCMI, EPSR, Spinvert, RMCProfile, and Yell. The Conference proposes 8 invited talks and about 16 additional oral contributions, as well as a poster session. The Fourier transformation of diffraction data into real-space produces a Pair-Distribution Function (PDF) that provides a model-independent "snapshot" of the local structure within the sample. The PDF(r) thus probes both static and dynamic atomic correlations (and also magnetic spin-spin correlations in the case of neutron diffraction). The so-called "PDF-analysis" technique is therefore complementary to the well-known Rietveld method of refining diffraction data in Q-space that provides a space-time averaged picture of the sample's structure. PDF-analysis now enjoys a wide field of application, in particular to nano-structured materials. As compared to ADD2016, the 2019 edition includes 2 additional tutorials: DiffPy-CMI: A more flexible and powerful command-line version of PDFgui. Spinvert: A Reverse Monte-Carlo program for refining diffuse magnetic neutron scattering data from powdered samples and providing a spin-spin Pair-Distribution Function or "magnetic PDF" for the magnetic species. In addition, ADD2019 features new pedagogic lectures on nitty-gritty data-reduction and data-correction techniques for x-ray and neutron diffraction as concerns liquids/glasses, disordered crystals and single-crystal diffuse scattering. More detailed information, including on-line registration and a preliminary programme, can be found on the webpage link given above. Note that registration is already open, and that we will soon make a Call for Abstracts (see the "Important Dates" tab for deadlines). Looking forward to seeing you in Grenoble, The organizers: Michela Brunelli (DUBBLE/ESRF) Gabriel Cuello (ILL) Henry Fischer (ILL) Gavin Vaughan (ESRF) P.S. we apologize if you receive this email message more than once.
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