Neutron scattering with a triple-axis spectrometer basic techniques
Neutron scattering is an extremely powerful tool in the study of elemental excitations in condensed matter. This book provides a practical guide to basic techniques using a triple-axis spectrometer. Introductory chapters summarize useful scattering formulas and describe the components of a spectrome...
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| Format: | Elektronisch E-Book |
| Sprache: | English |
| Veröffentlicht: |
Cambridge
Cambridge University Press
2002
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| Schlagworte: | |
| Online-Zugang: | DE-12 DE-92 URL des Erstveröffentlichers |
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Inhaltsangabe:
- Properties of thermal neutrons Neutron sources Reciprocal space and scattering diagram Elastic scattering Inelastic scattering Neutron scattering instruments Three-axis instrument Time-of-flight (TOF) instrument Backscattering and neutron spin echo (NSE) Scattering formulas Fermi's Golden Rule and the Born approximation Coherent vs. incoherent scattering Coherent nuclear scattering Elastic scattering (Bragg peaks) Inelastic scattering Incoherent nuclear scattering Coherent magnetic scattering Paramagnetic scattering Magnetic form factors and orbital moments Determination of magnetic structures with unpolarized neutrons Coherent inelastic magnetic scattering Magnons Diffuse magnetic scattering Elements of a three-axis instrument Shielding Monochromators Focusing monochromators and analyzers Resolution effects Double monochromators Collimators Filters Fast neutron filters Resonance filters Bragg-scattering filters Absorbers Spectrometer alignment Initial optical alignment Experimental alignment Goniometers Two-circle goniometer Four-circle goniometer Translation of the sample Super holder New developments Inelastic scattering and the resolution function Notation and definitions Definition of the resolution function Constant-Q scans Focusing Selection of collimators and energies Bragg tails Constant-E scans Vertical resolution Harmonics in the incident beam