Annual General Meeting of ORSO

Session

Plenary

14 Jun 2021, 09:00

Zoom

Conveners

Plenary: Session 1

• Thomas Arnold (European Spallation Source ERIC)

Plenary: Session 2

• Thomas Arnold (European Spallation Source ERIC)

Plenary: Session 3

• There are no conveners in this block

Description

Summary of progress since the last meeting
3-4 scientific talks (speakers to be confirmed)

2. Introduction

Thomas Arnold (European Spallation Source ERIC)

14/06/2021, 09:00

3. Reproducible science in the neutron reflection context

Dr Stuart Prescott (UNSW Chemical Engineering)

14/06/2021, 09:15

Reproducibility is a broad term that covers many aspects of the scientific endeavour. In the context of a reflectometry experiment, ‘reproducibility’ can be understood to cover the details of sample preparation, data collection, data reduction, and data analysis. Attention to reproducibility is enabling: it allows the experiment to be repeated, the data handling pipeline to be checked, the...

4. Spatially resolved neutron reflectometry by computed tomography

Hiroyuki Aoki

14/06/2021, 09:45

Neutron reflectometry (NR) has been employed to analyze the nanometric structure of the surface and interfaces of various materials. In a conventional NR experiment, the illuminated area is on the order of 1 - 10 cm^2; therefore, it has been difficult to use the NR for the sample with in-plane inhomogeneity. This work realized a spatially resolved NR technique by the combination of a...

5. Resonant x-ray reflectivity: probing the chemical and magnetic profiles

Tom Hase

14/06/2021, 10:30

6. Nina-Juliane Steinke

14/06/2021, 11:00

7. The Data Formats Working Group

Jochen Stahn (Paul Scherrer Institut)

14/06/2021, 11:30

8. The Education and Outreach Working Group

Bridget Murphy

14/06/2021, 11:45

9. Introduction

Thomas Arnold (European Spallation Source ERIC)

14/06/2021, 19:00

10. Reinventing time-of-flight reflectometry—return of a proven approach

Tim Charlton

14/06/2021, 19:15

T. Charlton, H. Ambaye and A. Huon (ORNL)
M.R. Fitzsimmons (ORNL/University of Tennessee, Knoxville)

In this self-hosted Zoom-chat, I will discuss data acquisition and analysis techniques for neutron reflectometry at continuous wave (CW) sources applied to a pulsed-neutron source. I show data collected using the BL4A reflectometer at the Spallation Neutron Source (ORNL) using the so-called...

11. Free Thiols Regulatation of the Interactions and Self-Assembly of Thiol-Passivated Metal Nanoparticles investigated with X-ray scattering and MD simulations.

Binhua Lin

14/06/2021, 19:45

Pan Suna,1, Linsey M. Nowack b,1, Wei Bu a, Mrinal K. Bera a, Sean Griesemer b, Morgan Reik b, Joshua Portner b, Stuart A. Riceb,d, Mark L. Schlossman c and Binhua Lin a,b*
a NSF’s ChemMatCARS, University of Chicago, Chicago, IL 60637, USA
b James Franck Institute, University of Chicago, Chicago, IL 60637, USA
c Department of Physics, University of Illinois at Chicago, Chicago, IL 60607,...

12. Why NeXus?

Ray Osborn

14/06/2021, 20:30

13. 35 years of x-ray reflectivity at NSLS & NSLS II: science hiding in small features and the new kid (instrument) on the block

Ben Ocko

14/06/2021, 21:00

14. The Data Analysis Working Group

Brian Maranville

14/06/2021, 21:30

15. The Reproducibility Working Group

Andrew McCluskey (European Spallation Source ERIC)

14/06/2021, 21:45

16. Summary of the working group sessions

18/06/2021, 19:00

17. New Methods in Reflectivity Analysis: Neural Networks and the Fisher Information

Joshanial Cooper, James Durant

18/06/2021, 19:30

18. Artificial Intelligence Analysis of Reflectivity Data

Stefan Kowarik

18/06/2021, 20:00

Stefan Kowarik1, Alessandro Greco2, David Marecek1, Erich Hüthmair1, Vladimir Starostin2, Alexander Hinderhofer2, Alexander Gerlach2, Maximilian Skoda3, and Frank Schreiber2
— 1Department of Physical Chemistry, University of Graz, Austria
— 2Institute of Applied Physics, University of Tübingen, Germany
— 3Rutherford Appleton Lab, ISIS Neutron and Muon Source, UK
We review the applicability...

19. Towards reflectivity profile inversion through artificial neural networks

Juan Carmona Loaiza

18/06/2021, 20:30

The goal of specular neutron and x-ray reflectometry is to infer a material's scattering length density (SLD) profile from its experimental reflectivity curves. In this talk I will quickly describe the ill-posed non-invertible problem and an approach to some solutions via the use of artificial neural networks (ANNs). In particular, I will describe a set of tailored numerical experiments with...