An Introduction to Neutron Scattering - Spallation Neutron Source

More documents

Recommendations

Info

$Powder Diffraction - Spallation Neutron Source$

$Single Crystal Diffraction - Spallation Neutron Source$

An NRSE Triple Axis Spectrometer at HMI: Note the Tilted Coils
Measuring Line Shapes for Inelastic Scattering • Spin echo polarization is the FT of scattering within the spectrometer transmission function • An echo is obtained when d dk 1 ⎡( Bd) ⎢ ⎣ k1 1 2 • Normally the lines of constant spinecho phase have no gradient in Q,ω space because the phase depends only on k ( Bd) − k • The phase lines can be tilted by using “tilted” precession magnets 2 ⎤ ⎥ ⎦ = 0 ⇒ N k 1 2 1 = N k 2 2 2 ω ω Q Q
Page 1 and 2:
y Roger Pynn Los Alamos National La
Page 3 and 4:
Why do Neutron Scattering? • To d
Page 5 and 6:
The Neutron has Both Particle-Like
Page 7 and 8:
Thermal Neutrons, 8 keV X-Rays & Lo
Page 9 and 10:
Brightness & Fluxes for Neutron & X
Page 11 and 12:
Scattering by a Single (fixed) Nucl
Page 13 and 14:
Coherent and Incoherent Scattering
Page 15 and 16:
so or ie Coherent Elastic Scatterin
Page 17 and 18:
Neutrons can also gain or lose ener
Page 19 and 20:
Magnetic Scattering • The magneti
Page 21 and 22:
Ene rgy Trans fe r (me V) 10000 100
Page 23 and 24:
References • Introduction to the
Page 25 and 26:
Overview 1. Essential messages from
Page 27 and 28:
What Do We Need to Do a Basic Neutr
Page 29 and 30:
About 1.5 Useful Neutrons Are Produ
Page 31 and 32:
The ESRF* & ILL* With Grenoble & th
Page 33 and 34:
Neutron Sources Provide Neutrons fo
Page 35 and 36:
Proton Radiography 800-MeV Linear A
Page 37 and 38:
Components of a Spallation Source A
Page 39 and 40:
Simultaneously Using Neutrons With
Page 41 and 42:
The Actual ToF Gain From Source Pul
Page 43 and 44:
Why Isn’t There a Universal Neutr
Page 45 and 46:
• Uncertainties in the neutron wa
Page 47 and 48:
Typical Neutron Scattering Instrume
Page 49 and 50:
Most Neutron Detectors Use 3 He •
Page 51 and 52:
Rotating Choppers Are Used to Tailo
Page 53 and 54:
3. Diffraction Next Lecture 1. Diff
Page 55 and 56:
2. Diffraction This Lecture 1. Diff
Page 57 and 58:
Neutron Diffraction • Neutron dif
Page 59 and 60:
For Periodic Arrays of Nuclei, Cohe
Page 61 and 62:
We would be better off if diffracti
Page 63 and 64:
Powder - A Polycrystalline Mass All
Page 65 and 66:
Measuring Neutron Diffraction Patte
Page 67 and 68:
Time-of-Flight Powder Diffraction U
Page 69 and 70:
There’s more than meets the eye i
Page 71 and 72:
How good is this function? Protein
Page 73 and 74:
High-resolution Neutron Powder Diff
Page 75 and 76:
Texture Measurement by Diffraction
Page 77 and 78:
Definitions of Stress and Strain
Page 79 and 80:
Why use Metal Matrix Composites ? F
Page 81 and 82:
Neutron Diffraction Measures Mean R
Page 83 and 84:
Deformation Mechanism in U/Nb Alloy
Page 85 and 86:
Obtaining the Pair Distribution Fun
Page 87 and 88:
Effect of Doping on the Octahedra
Page 89 and 90:
Surface Reflection Is Very Differen
Page 91 and 92:
What Is the Neutron Wavevector Insi
Page 93 and 94:
Only Those Thermal or Cold Neutrons
Page 95 and 96:
What do the Amplitudes a R and a T
Page 97 and 98:
Fresnel’s Law for a Thin Film •
Page 99 and 100:
Reflection by a Graded Interface io
Page 101 and 102:
Direct Inversion of Reflectivity Da
Page 103 and 104:
4 R*Q z 10 -7 10 -8 10 -9 1.3% PEG
Page 105 and 106:
Polarized Neutron Reflectometry (PN
Page 107 and 108:
Reflection from Rough Surfaces z z
Page 109 and 110:
fi fi fi Q =kf -ki Qx-Qz Transforma
Page 111 and 112:
Observation of Hexagonal Packing of
Page 113 and 114:
This Lecture 5. Small Angle Neutron
Page 115 and 116:
Two Views of the Components of a Ty
Page 117 and 118:
Where Does SANS Fit As a Structural
Page 119 and 120:
Instrumental Resolution for SANS Tr
Page 121 and 122:
SANS Measures Particle Shapes and I
Page 123 and 124:
Examples of Spherically-Averaged Fo
Page 125 and 126:
Correlations Can Be Measured in Con
Page 127 and 128:
Radius of Gyration Is the Particle
Page 129 and 130: Contrast & Contrast Matching Water
Page 131 and 132: Verification of of the Gaussian Coi
Page 133 and 134: Porod Scattering function. n correl
Page 135 and 136: ln(I) Typical Intensity Plot for SA
Page 137 and 138: References • Viewgraphs describin
Page 139 and 140: We Have Seen How Neutron Scattering
Page 141 and 142: The Elastic & Inelastic Scattering
Page 143 and 144: Examples of S(Q,ω) and S s(Q,ω)
Page 145 and 146: Inelastic Magnetic Scattering of Ne
Page 147 and 148: Measured Inelastic Neutron Scatteri
Page 149 and 150: Atomic Motions for Longitudinal & T
Page 151 and 152: Phonons - the Classical Use for Ine
Page 153 and 154: The Accessible Energy and Wavevecto
Page 155 and 156: What Use Have Phonon Measurements B
Page 157 and 158: Time-of-flight Methods Can Give Com
Page 159 and 160: Neutron Spin Echo By Roger Pynn* Lo
Page 161 and 162: • Uncertainties in the neutron wa
Page 163 and 164: The Underlying Physics of Neutron S
Page 165 and 166: How does a Neutron Spin Behave when
Page 167 and 168: The Principles of NSE are Very Simp
Page 169 and 170: For Quasi-elastic Scattering, the E
Page 171 and 172: Neutron counts ( per 50 sec) Neutro
Page 173 and 174: Field-Integral Inhomogeneities caus
Page 175 and 176: Neutron Spin Echo study of Deformat
Page 177 and 178: Neutron Spin Phases NRSE spectromet
Page 179: The Measured Polarization for NRSE
Page 183 and 184: “Phonon Focusing” • For a sin
Page 185 and 186: An NRSE Triple Axis Spectrometer at
Page 187 and 188: “Tilted” Fields for Diffraction
Page 189 and 190: Spin Echo SANS using Magnetic Films
Page 191: Conclusion: NSE Provides a Way to S
show all

An Introduction to Neutron Scattering - Spallation Neutron Source

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?