Course11510113169 lectures
Neutron Scattering for Condensed Matter Studies
Prof. Saibal Basu · Homi Bhabha National Institute
About
The short-range strong interaction of neutron with matter and the inherent magnetic moment of neutron, makes neutron scattering a unique probe in condensed matter research. An important advantage of neutrons is that they carry no charge and can penetrate the bulk of materials. They interact via strong force with the nuclei of the material and the scattering cross section varies randomly between various elements and even between two isotopes of the same element. This allows one to observe light atoms such as hydrogen in the presence of heavier ones and distinguish neighbouring elements in the periodic table easily. Notably, hydrogen and deuterium have large contrast with respect to neutrons. One can exploit isotopic substitution and contrast variation methods in such studies. Since neutron also carries a magnetic moment of -1.91μN, it also interacts with magnetic moment in atoms, making it a unique probe for determination of microscopic magnetic structure. Wavelength and energy of thermal neutron match with the lattice spacing and excitations in condensed matter and makes it an indispensable tool to study both structure and dynamics in condensed matter. Using neutron scattering techniques with varying momentum transfer and energy transfer range and resolution one is capable or understanding structure and dynamics in materials at various length and time scales.
Intended audience: Ph. D. students and researchers in condensed matter physics
Prerequisites: M.Sc in Physics or Chemistry/bachelor’s in Material Science. The course is a stand-alone course for application of neutron scattering to condensed matter problems.INTENDED AUDIENCE: Ph. D. students and researchers in condensed matter physics
Lectures
Week 1
- Lecture 1A : Introduction to neutrons
- Lecture 1B: Introduction to neutrons
- Lecture 1C: Introduction to neutrons
- Lecture 2A: Deriving neutron scattering cross-section
- Lecture 2B: Deriving neutron scattering cross-section
Week 2
- Lecture 3A: Scattering theory and introducing dynamics in the formalism
- Lecture 3B: Scattering theory and introducing dynamics in the formalism
- Lecture 3C: Scattering theory and introducing dynamics in the formalism
- Lecture 4A: Scattering law’s correlation with double-Fourier transform of real space correlation function
- Lecture 4B: Scattering law’s correlation with double-Fourier transform of real space correlation function
- Lecture 5A: Correlation function to resolution and accessible(Q,ω) . Introducing experimental facilities
- Lecture 5B: Correlation function to resolution and accessible(Q,ω) . Introducing experimental facilities
Week 3
- Lecture 6A: Correlation function to resolution and accessible(Q,ω). Introducing experimental facilities
- Lecture 6B: Correlation function to resolution and accessible(Q,ω). Introducing experimental facilities
- Lecture 7A: Introducing resolution and components of neutron scattering facilities
- Lecture 7B: Introducing resolution and components of neutron scattering facilities.
- Lecture 8A: Continue with neutron scattering set up and its components like collimators, filters, detectors etc.
- Lecture 8B: Continue with neutron scattering set up and its components like collimators, filters, detectors etc.
Week 4
- Lecture 9A: Describe the operation of various kinds of neutron detectors
- Lecture 9B: Describe the operation of various kinds of neutron detectors
- Lecture 10A: Introducing neutron choppers, velocity selectors and polarizers, some important components of beam tailoring devices
- Lecture 10B: Introducing neutron choppers, velocity selectors and polarizers, some important components of beam tailoring devices
- Lecture 11A: Neutron polarizers and spin-flippers
- Lecture 11B: Neutron polarizers and spin-flippers
Week 5
- Lecture 12A: Diffraction at various length scales at a reactor and at a spallation neutron source
- Lecture 12B: Diffraction at various length scales at a reactor and at a spallation neutron source
- Lecture 13A: Application of neutron crystallography
- Lecture 13B: Application of neutron crystallography
- Lecture 14A: Magnetism in solids
- Lecture 14B: Magnetism in solids
Week 6
- Lecture 15A: Magnetic interaction in solids and magnetic neutron diffarction
- Lecture 15B: Magnetic interaction in solids and magnetic neutron diffarction
- Lecture 15C: Magnetic interaction in solids and magnetic neutron diffarction-Copy
- Lecture 16A: Magnetic neutron diffraction
- Lecture 16B: Magnetic neutron diffraction
- Lecture 17A: Neutron diffraction from liquid and amorphous systems
- Lecture 17B: Neutron diffraction from liquid and amorphous systems
Week 7
- Lecture 18A: Small Angle Neutron Scattering (SANS) for mesoscopic structure
- Lecture 18B: Small Angle Neutron Scattering (SANS) for mesoscopic structure
- Lecture 18C: Small Angle Neutron Scattering (SANS) for mesoscopic structure
- Lecture 18D: Small Angle Neutron Scattering (SANS) for mesoscopic structure
- Lecture 19A: SANS for soft condensed matter
- Lecture 19B: SANS for soft condensed matter
- Lecture 20A: SANS for polymers, biological systems, nanoparticle aggregates, rocks, Superconducting vortex lattice
- Lecture 20B: SANS for polymers, biological systems, nanoparticle aggregates, rocks, Superconducting vortex lattice
Week 8
- Lecture 21A: Neutron reflectometry for thin films
- Lecture 21B: Neutron reflectometry for thin films
- Lecture 21C: Neutron reflectometry for thin films
- Lecture 22A: Details formalism to evaluate specular neutron reflectivity and comparison with x-ray reflectometry
- Lecture 22B: Details formalism to evaluate specular neutron reflectivity and comparison with x-ray reflectometry
Week 9
- Lecture 23A: Neutron reflectometry data analysis and reflectometers at various sources
- Lecture 23B: Neutron reflectometry data analysis and reflectometers at various sources
- Lecture 23C: Neutron reflectometry data analysis and reflectometers at various sources
- Lecture 24A: Examples of PNR with and without spin analysis and introduction to off-specular reflectometry
- Lecture 24B: Examples of PNR with and without spin analysis and introduction to off-specular reflectometry
- Lecture 24C: Examples of PNR with and without spin analysis and introduction to off-specular reflectometry
Week 10
- Lecture 25A: Off-specular neutron reflectometry and introduction to inelastic neutron scattering
- Lecture 25B: Off-specular neutron reflectometry and introduction to inelastic neutron scattering
- Lecture 25C: Off-specular neutron reflectometry and introduction to inelastic neutron scattering
- Lecture 26A: Phonon measurements with neutrons
- Lecture 26B: Phonon measurements with neutrons
Week 11
- Lecture 27A: Aspects of phonon measurements and spectrometers at various sources
- Lecture 27B: Aspects of phonon measurements and spectrometers at various sources
- Lecture 28A: Phonon density of states and Quasi Elastic Neutron Scattering (QENS)
- Lecture 28B: Phonon density of states and Quasi Elastic Neutron Scattering (QENS)
Week 12
Syllabus and materials
At NPTEL, as the course publishes them.
Credits and licence
- Institution
- Homi Bhabha National Institute
- Department
- Physics
- Teacher
- Prof. Saibal Basu
- Level
- Graduate
- Language
- English
- Subjects
- Physics
- Source
- NPTEL
- Licence
- CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
- Attribution
- NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge. Coordinated by IIT Bombay.
- Who can watch
- NPTEL gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed
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