NXS 2017 Lectures
ORNL Lectures
SNS Central Laboratory and Office Building (8600)
Iran Thomas Auditorium (Room A-103)
August 13–18, 2017
August 13
1:00–1:45. Neutron Generation and Detection/Neutron Optics and Instrumentation
Lee Robertson, ORNL, Instrument and Source Design Division
Theory and practice of how neutrons are generated and detected for neutron scattering and neutron imaging. What constitutes a neutron scattering instrument, and what components are needed to make it work. Updates will be given on technological advances in neutron scattering instrumentation.
2:00–2:45. Quasi-Elastic Neutron Scattering
Ken Herwig, ORNL, Instrument and Source Design Division
Theory and practice of quasi-elastic neutron scattering. How it is done and why it is important for the study of dynamics. Examples provided from the SNS BASIS instrument.
August 14
8:30–9:30. Inelastic Neutron Scattering
Bruce Gaulin, Brockhouse, Institute for Materials Research, McMaster University
Theory and practice of inelastic neutron scattering, with particular emphasis on the use of triple-axis spectrometers at reactor sources and chopper spectrometers at spallation sources.
9:45–10:45, 11:00–12:00. Inelastic Neutron Scattering: Magnetic Scattering
Bruce Gaulin, Department of Physics, McMaster University
Origin of magnetic scattering using neutrons, and how this has been developed into one of the signature uses for neutrons. Magnetic neutron scattering provides an unparalleled microscopic view of how magnetic ions are arranged in solids and their exchange interactions. Examples in condensed matter research will be presented.
August 15
8:30–9:30. Neutron Reflectivity
Chuck Majkrzak, Center for Neutron Research, National Institute of Standards and Technology
Origin and theory of neutron reflectivity in the study of layered heterostructures. Design and application of modern neutron reflectometers, with examples in both soft and hard matter.
9:45–10:45. Neutron Polarization
Chuck Majkrzak, Center for Neutron Research, National Institute of Standards and Technology
The how and why of neutron polarization for enhancing neutron diffraction and spectroscopy, in studies of condensed matter.
11:00–12:00. PDF Analysis
Kate Page, ORNL, Chemical and Engineering Materials Division
Pair Distribution Analysis can reveal short range order in solids using neutron and x-ray diffraction data. Methods and practice will be presented with examples of nanoparticle systems and disordered crystals.
August 16
8:30–9:30. Neutron Spin Echo Spectroscopy
Piotr A. Zolnierczuk, Julich Centre for Neutron Science, SNS
Methods and practice of NSE spectroscopy for the study of slow dynamics in condensed matter systems, both hard and soft. Examples using the SNS NSE beamline will be presented.
9:45–10:45. Imaging with Neutrons
Lou Santodonato, ORNL, Chemical and Engineering Materials Division
Real-space imaging using neutrons offers significant advantages over x-ray imaging, and owing to its greater penetration depth, and nuclear scattering. Theory and practice of neutron imaging methods will be presented, along with a diverse array of examples, particularly utilizing the ORNL neutron sources.
11:00–12:00. Neutron Vibrational Spectroscopy
Luke Daemen, ORNL, Chemical and Engineering Materials Division
With no selection rules like IR and Raman spectroscopy, neutron vibrational spectroscopy offers a diverse range of opportunities to study molecular dynamics and chemical bonding in condensed matter systems. Methods and practice will be presented with particular examples from the SNS VISION beamline.
August 17
8:30–9:30. Materials Engineering
Mark Bourke, LANL, Applied Physics Division
Materials engineering diffraction using neutrons is widely applied to structural materials, particularly metal alloys systems. Large penetration depths allow mapping of residual stress throughout the volume of large real-life components, e.g., weldments, brake rotor, turbine blade, etc.
9:45–10:45. High-Pressure Applications
Barbara Lavina, Department of Physics and Astronomy, University of Nevada—Las Vegas
High pressure can markedly change physical properties of materials, and induce phase transitions. Methods of x-ray and neutron scattering (particularly diffraction) are reviewed, showcasing recent advancements in pressure cell technology, with example applications in the study of condensed matter.
11:00–12:00. Powder Diffraction Applications
Ashfia Huq, ORNL, Chemical and Engineering Materials Division
Powder diffraction is one of the most popular methods employed at big user facilities like the APS, HFIR, and SNS, owing to its diverse applications. It is one of the primary tools for materials characterization. Examples will be showcased here that demonstrate the need for high resolution afforded by synchrotrons, and the unique properties of neutron diffraction for light elements, magnetic structures, and specific element pair discrimination.
August 18
8:30–9:30. Diffuse Scattering
Ray Osborn, Argonne National Laboratory, Materials Science Division
Diffuse scattering from single-crystals gives insight into various kinds of disorder, which has been a focus of attention since the early days of X-ray and neutron diffraction. Now, more interest has spread across multiple disciplines to glean more complete diffuse scattering patterns using modern day area detectors. Theory and practice of diffuse scattering from diffraction will be introduced, with examples using both x-ray and neutron.
9:45–10:45. Writing Proposals for Neutron & X-ray Beamtime
John Budai, ORNL, Materials Science and Technology Division
The ins and outs of successful proposal writing for beam-time requests at big user facilities, with emphasis on proposals for the APS, HFIR, and SNS. Invaluable advice for first-timers.
Argonne Lectures
Sponsored by:
