OnlineLectures

ASP Online Seminars: Synchrotron and neutron based diffraction and spectroscopic techniques (Part 1)

Name: ASP Online Seminars: Synchrotron and neutron based diffraction and spectroscopic techniques (Part 1)
Start: 2020-11-24T15:30:00+01:00
End: 2020-11-24T17:00:00+01:00
Location: No location set

by Prof. Andrew Harrison (Diamond Light Source Ltd)

Tuesday 24 Nov 2020, 15:30 → 17:00 Europe/Paris

Description

Join Zoom Meeting

https://cern.zoom.us/j/95193567359?pwd=TzdPQWsyWXlSTy9RNXFoa1FhL2xqQT09

Meeting ID: 951 9356 7359

Zoom password: ASP-Online (if needed)

Certain experimental analytic facilities are too large and expensive to be set up by individual research groups or universities and are instead established and supported at national or international level. Among such national facilities, those for synchrotron radiation and neutron scattering are particularly useful for the study of the structure, chemical composition, dynamics and magnetic and electronic properties of materials. This course first outlines the principles of interaction of powerful X-rays with materials and describes how these principles may then be exploited in crystallography and chemical analysis with information on valence states and local chemical environment at sub-micron resolution. Neutrons provide a complementary probe that is particularly sensitive and informative about light elements such as hydrogen, about magnetic structure and about atomic and molecular motion relevant to chemical diffusion and magnetic excitations.

In this first lecture, we introduce and study Synchrotrons:

Historic origins
Key features of synchrotron radiation facilities
Key characteristics of synchrotron radiation
Principal ways in which synchrotron radiation interacts with matter at a macroscopic level: spectroscopy, scattering and imaging
Principal ways in in which synchrotron radiation interacts with matter at an atomic level: the Thomson effect and electronic excitation and relaxation.