Small Angle Scattering of neutrons and xrays - NeutronXraySchool ...

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SAS of x-rays, neutrons, laser light • SAXS & SANS: structural information 1nm-1μm • XX-rays rays – Rotating anode / sealed tube: ~ 400 k$ – Synchrotron: high flux, very small beams • Neutrons – Isotope contrast, high penetration, magnetic contrast • L Laser Li Light ht scattering tt i – Bench top technique, static and dynamic • Applications in … – Important for polymers, soft materials, (biology) – Particulate and non-particulate …really – Pretty much anything 1nm-1μm anything? 4 Managed by UT-Battelle for the U.S. Department of Energy Presentation_name
SAS applications A to Z But what Alzheimer’s disease, aerogel, alloys Magnetic flux lines, about SEM, Alzheimer s disease, aerogel, alloys g , materials science TEM TEM, AFM Bio-macromolecular assemblies, bone …? Nano-anything Colloids, complex fluids, catalysts Orientational order Detergents, dairy (casein micelles) Polymers, phase behavior, porosity Earth science, emulsions Quantum dots (GISAXS) ( ) Fluid adsorption in nanopores, ffuel cells, food science (chocolate) Rubber, ribosome Gelation, green solvents High pressure, high temperature…, hydrogen storage, helium bubble growth in fusion reactors Implants (UHDPE) Jelly Kinetics (e (e.g. g of polymerization or protein folding), keratin Liquid Crystals Soft matter, surfactants, switchgrass Time-resolved, thermodynamics Uranium separation VVesicles, i l virus i Wine science Xylose isomerase Yttrium-stabilized zirconia (YSZ) Zeolites
Page 1 and 2: Small Angle Scattering of neutrons
Page 3: Outline • Applications - is SAS f
Page 7 and 8: Neutron Scattering and Microscopy
Page 9 and 10: Microscopy : enlarged image inciden
Page 11 and 12: Diffraction (Crystallography) here
Page 13 and 14: Scattering Vector - q aka momentum
Page 15 and 16: Absolute Intensity / Scattering Cro
Page 17 and 18: 14 -3 scattering lenngth cm.Å dens
Page 19 and 20: SANS of labeled stretched rubber
Page 21 and 22: At the beamline incident beam Sampl
Page 23 and 24: SANS Instrument - a pinhole camera?
Page 25 and 26: SANS at a pulsed source EQ-SANS, SN
Page 27 and 28: SANS guide hall (HFIR) 27 Managed b
Page 29 and 30: 29 Managed by UT-Battelle for the U
Page 31 and 32: Data Reduction, Processing, Correct
Page 33 and 34: Analysis of SAS data here typical p
Page 35 and 36: Analysis of SAS data S(q) * P(q) is
Page 37 and 38: Sphere precisely: monodisperse sphe
Page 39 and 40: P(Q) P Sphere precisely: monodisper
Page 41 and 42: Spheres of different sizes P(Q) 10
Page 43 and 44: Ellipsoid aspect ratio 1.5 P(Q) 10
Page 45 and 46: “Long & thin” cylinder P(Q) P 1
Page 47 and 48: Polymer coil P(Q) 1 8 6 0.1 4 2 8 6
Page 49 and 50: Guinier Analysis size of any kind o
Page 51 and 52: Modified Guinier Analysis for objec
Page 53 and 54: P( 4 3 2 (r) 4 1 Pair correlation f
Page 55 and 56:
SAS Form Factor Modeling of great g
Page 57 and 58:
Two-Component Systems 57 Managed by
Page 59 and 60:
Interparticle Structure Factor S(Q)
Page 61 and 62:
S(Q) and Statistical Thermodynamics
Page 63 and 64:
Structural Hierarchy (particulate)
Page 65:
SAS Summary • SAS applications ar
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