[Neutron] Workshop announcement: “Advanced Neutron Powder Diffraction Analysis with TOPAS” Sep. 24th-27th, 2024, SNS, ORNL

[Li, Cheng]

Dear Colleagues,
We are excited to announce that the “Advanced Neutron Powder Diffraction Analysis with TOPAS” workshop will be held from September 24-27, 2024, at Oak Ridge National Laboratory, in partnership with Bruker-AXS.
The escalating demand within the powder diffraction/PDF community for advanced structure analysis using TOPAS has become increasingly evident. This is particularly important in analyzing time-of-flight neutron diffraction data, where modeling resolution functions and peak profiles poses persistent challenges. TOPAS stands out among widely used Rietveld/PDF analysis software due to its unique capability allowing users to code their own functions/macros. This feature empowers users to tackle complex issues, including the intricate challenges associated with resolution functions and peak profiles in neutron powder diffraction data analysis. We will also teach complementary use of neutron pair distribution function (PDF) and diffuse scattering data to carry out comprehensive structure analysis, highlighting the new functionality of the TOPAS software to carry out both conventional Rietveld and PDF/diffuse scattering structure analysis.

Topics to Cover
• Rietveld refinement and whole pattern fitting in TOPAS
• Neutron powder diffraction data analysis from US national user facility beamlines
• Complementary use of neutron pair distribution function (PDF) and diffuse scattering data in TOPAS
• Hands-on sessions with new TOPAS functionality for complex structure analysis using neutron diffraction data
The registration is free for 25 participants. Preference will be given to active and future SNS/HFIR users who can benefit most from this workshop.
Local organizers: Jue Liu (liuj1 at ornl.gov), Cheng Li, Alicia Manjon Sanz, Athena Chen, Yuanpeng Zhang (ORNL)
best regards,
Cheng Li
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Neutron Scattering Scientist at NOMAD and POWGEN

Spallation Neutron Source, Oak Ridge National Laboratory

1 Bethel Valley Rd.

Oak Ridge, TN 37831-6473, USA

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