Neutron Spin Echo Spectroscopy

by Mezei, F.; Pappas, C.; Gutberlet, T.; Gutberlet, T.

• ISBN13: 9783540442936
• ISBN10: 3540442936
• Format: Hardcover
• Copyright: 2002-12-01
• Publisher: Springer Verlag

Summary

Neutron spin echo (NSE) spectroscopy is the highest energy resolution neutron scattering technique available for examining a large area (in time and space) in condensed matter physics. This broad dynamic and spatial range is extensively exploited in the study of a wide range of scientific problems ranging from the dynamics of glasses, polymer melts, complex fluids and microemulsions to the elementary excitations in superfluid 4 He and to ferromagnets and spin glasses. This book reviews the current status and future prospects in NSE spectroscopy describing the method, latest instrumentation and also the use of NSE in fundamental, hard- and soft-matter science. It provides first-hand information for researchers working in the fields touched by NSE. In addition, young researchers, PhD students and graduates interested in the method will obtain a comprehensive overview and guidelines to implementing the NSE technique.

Table of Contents

Introduction
F. Mezei	1	(4)
Part I Basic Science and Technology
Fundamentals of Neutron Spin Echo Spectroscopy
F. Mezei	5	(10)
1 Principles of Neutron Spin Echo Spectroscopy	8	(3)
2 Approximations, Resolution Effects and Data Reduction	11	(2)
3 Magnetic Scattering Effects	13	(2)
Time-of-Flight Neutron Spin Echo: Present Status
B. Farago	15	(20)
1 Time-of-Flight Neutron Spin Echo	20	(10)
2 A Practical Example	30	(1)
3 Perspectives and Limitations	31	(4)
Wide Angle Neutron Spin Echo and Time-of-Flight Spectrometer
C. Pappas, A. Triolo, F. Mezei, R. Kischnik, C. Kali	35	(13)
1 General Description of the Spectrometer - Time-of-Flight Configuration	36	(1)
2 Neutron Spin Echo Configuration	37	(6)
3 Neutron Optics	43	(1)
4 Combination of NSE and TOF: Deuterated Atactic Polypropylene	44	(4)
Neutron Spin Echo Spectrometer at B.A.R.C. Trombay
S.L. Chaplot, R. Mittal, K.N. Prabhatasree	48	(8)
1 Instrument Design	48	(3)
2 Neutron Polarization Changes	51	(1)
3 Neutron Spin Echo	52	(4)
Compact Neutron Spin Echo Device with Foil Spin Flippers
V. T. Lebedev, Gy. T÷r÷k, G.P. Gordeev	56	(9)
1 Compact Neutron Spin Echo Unit	57	(3)
2 Neutron Spin Echo Focusing	60	(3)
3 Quasielastic Scattering from Water	63	(2)
Modified Neutron Spin Echo with Spectrum Modulation:
Specific Feature and Applications
V. T. Lebedev, G.P. Gordeev, Gy. T÷r÷k	65	(9)
1 Modified Neutron Spin Echo	65	(4)
2 Main Spectrometer Specifications	69	(1)
3 Dynamics of Magnetic Flux Inhomogeneities in Y-Ba-Cu-O Ceramics	70	(4)
Neutron Resonance Spin Echo - Triple Axis Spectrometry (NRSE-TAS)
T. Keller, B. Keimer, K. Habicht, R. Golub, F. Mezei	74	(13)
1 Basic Principles of Spin Echo Phonon Focusing	76	(5)
2 The NRSE-TAS at BENSC Berlin	81	(6)
Elastic Neutron Scattering Measurements Using Larmor Precession of Polarized Neutrons
M. Th. Rekveldt, W. G. Bouwman, W.H. Kraan, O. Uca, S. V. Grigoriev,
K. Habicht, T. Keller	87	(13)
1 Angle and/or Wavelength Encoding with Larmor Precession	88	(7)
2 SESANS	95	(2)
3 High Resolution Larmor Diffraction	97	(3)
Technical Aspects of Larmor Precession with Inclined Front and End Faces
M. Th. Rekveldt, W. G. Bouwman, W.H. Kraan, O. Uca, S. V. Grigoriev, R. Kreuger 100
1 Options to Realize Inclined Faces	100	(8)
2 Technical Details for Homogeneous Field Line Integrals	108	(8)
Space-Time View of Neutron Spin Echo, Correlation Functions and Phonon Focusing
K. Habicht, R. Golub, R. GShler, T. Keller	116	(17)
1 Treatment of Inelastic Scattering Spin Echo by Larmor Precession	117	(3)
2 Quantum Mechanical Treatment of NSE and Inelastic Scattering	120	(3)
3 Semi-classical (Ray Tracing) Discussion of Inelastic Scattering NSE	123	(2)
4 Phonon Focusing	125	(3)
5 Phonon Focusing in the Space-Time View	128	(5)
Neutron Spin Echo as a Quantum Interference System
H. Rauch, M. Suda	133	(9)
1 Basic Formulation	134	(2)
2 Spin Echo `Quasi-Distribution' Functions	136	(6)
Neutron Speed Echo Spectroscopy
A. Ioffe	142	(23)
1 NSE as an Interference Phenomenon	143	(4)
2 Modulation of the Spectra by Two Moving Diffraction Gratings	147	(3)
3 Neutron Speed Echo Spectrometer	150	(2)
4 The Limit of Geometric Optics	152	(2)
5 Space-Time Description of a Neutron Speed Echo Spectrometer	154	(2)
6 Comparison of NSE and NSPE Spectrometers	156	(4)
7 Triple Axis Spectrometers with the NSPE Option	160	(5)
Neutron Spin Precession Optics: Recent Results and Some Perspectives
A.I. Frank, I. V. Bondarenko, A. V. Kozlov, G. Ehlers, P. Hoghoj	165	(11)
1 Interaction Time of Neutrons with an Object and the Larmor Clock
2 Experiment for the Measurement of the Delay Time in Refraction
3 Direct Measurement of the Neutron Interaction Time with Quantum Objects	170	(2)
4 Neutron Spin Precession and Phase Contrast Imaging with Very Slow Neutrons	172	(4)
Future Developments in Resonance Spin Echo
M. Bleuet, F. Demmel, R. Gahler, R. Golub, K. Habicht, T. Keller,
S. Klimko, I. K÷per, S. Longeville, S. Prokudaylo	176	(25)
1 ZETA: NRSE + Three Axis at ILL	177	(4)
2 RESEDA: NRSE at FRM-II	181	(2)
3 Proposal of a High Resolution NRSE Spectrometer	183	(3)
4 MIEZE and Its Applications	186	(7)
5 Multi-angle Analysis for MUSES at LLB	193	(3)
6 Neutron Computer Holography	196	(5)
Neutron Spin Echo Spectrometers of the Next Generation - Where Are the Limits?
M. Monkenbusch	201	(14)
1 Future Needs	201	(3)
2 Requirements and Generic Design	204	(7)
3 Limitations and Open Questions	211	(4)
Part II Applications in Physics, Chemistry and Life Sciences
Use of the Neutron Spin Echo Technique to Observe Flux Line Motion
E.M. Forgan, P.G. Kealey, A. Pautrat, Ch. Simon, S.L. Lee, R. Cubittt,
B. Farago, P. Schleger	215	(7)
1 Flux Lines and Their Motion in Superconductors	215	(1)
2 The Experimental Arrangement	216	(2)
3 Theory and Experimental Results	218	(4)
Dynamics of Frustrated Magnetic Moments in Antiferromagnetically Ordered TbNiAl
Probed by Spin Echo and Time-of-Flight Spectroscopy
G. Ehlers, H. Casalta, R.E. Lechner, H. Maletta	222	(10)
1 NSE and TOF Experiments	224	(8)
Critical Slowing Down in a Simple Fluid System as Measured by Neutron Spin Echo Technique.
Crossover Between Hydrodynamics and Critical Dynamics
F. Leclercq, S. Pouget, P. Damay	232	(14)
1 Theory and Background	233	(4)
2 Experiments and Data Analysis	237	(4)
3 Hydrodynamics and Critical Dynamics	241	(5)
Soft Matter and Biology
M. Monkenbusch	246	(22)
1 Soft Matter Systems	246	(1)
2 The NSE Signal	247	(2)
3 Linear Polymers	249	(10)
4 Block Copolymers	259	(2)
5 More Complicated Polymer Architectures	261	(1)
6 Microemulsions	262	(2)
7 Glasses	264	(1)
8 Biology	265	(3)
Dynamics of Glass Forming Polymers by Neutron Spin Echo
J. Colmenero, A. Arbe, D. Richter, B. Farago, M. Monkenbusch	268	(12)
1 Glass Forming Polymers	268	(2)
2 The a-Relaxation	270	(10)
Elastic and Quasielastic Neutron Scattering on Liquid Isotopic
and Binary Blends of Low Molecular Mass Poly(siloxanes)
B. Ewen, H. G÷tz, U. Maschke	280	(11)
1 Theory of Collective Polymer Dynamics	280	(2)
2 SANS and NSE Experiments	282	(9)
Neutron Spin Echo Study of the Dynamics in BIS Cross-linked Poly(N-Isopropyl
Acrylamide) Microgels: Dependence on the Cross-Linker Concentration
T. Hellweg, W. Eimer, S. Pouget, K. Kratz	291	(11)
1 Microgels	291	(1)
2 Materials, Preparation and Methods	292	(2)
3 Theory	294	(1)
4 NSE Experiments: Results and Discussion	295	(7)
Dynamical Fluctuation of Cylindrical Micelles and Membranes
in Binary and Ternary Amphiphilic Microemulsion Systems
S. Komura, T. Takeda, H. Seto, M. Nagao	302	(10)
1 Amphiphilic Microemulsions	302	(2)
2 The Zilman-Granek Theory	304	(1)
3 NSE Experimental Results	305	(4)
4 Analysis and Determination of Bending Modulus and Viscosity	309	(3)
Dynamics of Hydrophobically Modified Polymer Doped Surfactant Bilayers: A Neutron Spin Echo Study
B.-S. Yang, J. Lal, M. Mihaileseu, M. Monkenbusch, D. Richter,
J.S. Huang, W.B. Russel, R.K. Prud'homme	312	(13)
1 Polymer Doped Surfactant Bilayers	312	(2)
2 SANS and NSE Experiments	314	(3)
3 Static Elastic and Dynamic Properties	317	(8)
Neutron Resonance Spin Echo: Oxygen Transport in Crowded Protein Solutions
S. Longeville, W. Doster, M. Diehl, R. GShler, W. Petry	325	(12)
1 Neutron Resonance Spin Echo Spectrometry	325	(4)
2 Study of Myoglobin Diffusion with NRSE	329	(8)
Index	337