Shirane G., Shapiro S.M., Tranquada J.M. Neutron Scattering with a Triple-Axis Spectrometer: Basic Techniques

Cambridge University Press, 2004. – 285 p. – ISBN: 0-511-03732-5.The triple-axis spectrometer (TAS) remains arguably the most versatile instrument used for neutron scattering studies, and research using TASs has been of fundamental importance to many areas of condensed-matter science. The power provided by the flexibility of the TAS brings with it some challenges, and determining the optimal conditions for a particular experiment (often referred to as “finding the window”) is a significant one. Various experimental pitfalls have also been identified over the years. For 32 years (1965–96), triple-axis spectrometers at Brookhaven’s High Flux Beam Reactor (HFBR) were the main tools of our Neutron ScatteringProperties of thermal neutrons
Neutron sources
Reciprocal space and scattering diagram
Neutron scattering instruments
Scattering formulasFermi’s Golden Rule and the Born approximation
Coherent vs. incoherent scattering
Coherent nuclear scattering
Incoherent nuclear scattering
Coherent magnetic scattering
Coherent inelastic magnetic scattering
Elements of a three-axis instrument
Shielding
Monochromators
Collimators
Filters
Absorbers
Spectrometer alignment
Goniometers
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
Phonons and magnons
Phonons in copper
Phonons and magnons in iron
Magnons in MnF₂
Spurious peaks
Higher-order neutrons
Accidental Bragg scattering
Elastic streaks at small q
Resolution function artifacts
Artifacts due to sample environment
Techniques for spotting spurions
Bragg diffraction
Three-axis vs. two-axis instruments
Lorentzfac tor for a triple-axis spectrometer
Non-uniform lineshapes
Double scattering
Double scattering in structural phase transitions
Double scattering in magnetic transitions
Double scattering from twins
Varying resolution by choice of analyzer
Polarized neutrons
Scattering of polarized neutrons
Elements of a polarized-beam spectrometer
Magnetic form-factor studies
Uniaxial polarization analysis
Spherical neutron polarimetry
Appendix1 Neutron scattering lengths and cross sections
Appendix2 Crystallographic data
Appendix3 Other useful tables
Appendix4 The resolution function for a triple-axis neutron spectrometer