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Practical Guide to Quasi-elastic Neutron Scattering [Pehme köide]

(Science and Technologies Facility Council, UK)
  • Formaat: Paperback / softback, 152 pages, kõrgus x laius x paksus: 234x156x9 mm, kaal: 276 g, No
  • Ilmumisaeg: 07-Jul-2020
  • Kirjastus: Royal Society of Chemistry
  • ISBN-10: 1788012623
  • ISBN-13: 9781788012621
Teised raamatud teemal:
Practical Guide to Quasi-elastic Neutron ScatteringSuurem pilt
  • Formaat: Paperback / softback, 152 pages, kõrgus x laius x paksus: 234x156x9 mm, kaal: 276 g, No
  • Ilmumisaeg: 07-Jul-2020
  • Kirjastus: Royal Society of Chemistry
  • ISBN-10: 1788012623
  • ISBN-13: 9781788012621
Teised raamatud teemal:
Püsilink: https://www.kriso.ee/db/9781788012621.html
Märksõnad:
This title provides an accessible introduction to quasi-elastic neutron scattering (QENS), highlighting all key conceptual, theoretical and data interpretation aspects of the method.

Quasi-elastic neutron scattering (QENS) is an extremely powerful experimental technique for extracting temporal, spatial and energy information about soft and condensed matter systems on the nanoscale. This title provides an accessible introduction to the technique, which clearly and succinctly highlights all key conceptual, theoretical and data interpretation aspects of the method. Real research examples and worked analysis are used to illustrate the concepts addressed. The book will be of interest to students and researchers in academia and industry across chemistry, biology, physics, materials science and nanoscience. The technique of Quasi-Elastic Neutron Scattering (QENS) is a powerful experimental tool for extracting temporal and spatial information at the nanoscale from both soft and hard condensed matter systems. However, while seemingly simple, the method is beset with sensitivities that, if ill considered, can hinder data interpretation and possibly publication. By highlighting key theoretical and data evaluation aspects of the technique, this specialised ‘primer style’ training resource encourages research success by guiding new researchers through a typical QENS experiment; from planning and sample preparation considerations to data reduction and subsequent analysis. Research examples are referenced throughout to illustrate the concepts addressed, with the book being written in such a way that it remains accessible to chemists, biologists, physicists, and materials scientists.
Part 1 Basics
1(62)
1 If You Read Nothing Else...
3(13)
1.1 "What can Quasi-elastic Neutron Scattering Do for Me?"
3(10)
1.2 The Importance of Complementary Information
13(1)
References
14(2)
2 What Is QENS?
16(24)
2.1 Scattering Concepts
16(1)
2.2 Why Use Neutrons at All?
17(3)
2.3 The Scattering Process
20(4)
2.4 Momentum Transfer, Q, and Q-ω Space
24(3)
2.5 Momentum Transfer, Q, and Length Scale Probed, l
27(1)
2.6 The Scattering Function, S(Q,ω)
27(2)
2.7 The Scattering Cross Section, σ
29(4)
2.8 Interpreting S(Q,ω)
33(2)
2.9 Spectral Information Contained Within S(Q,ω)
35(4)
References
39(1)
3 Which Spectrometer Should I Choose?
40(23)
3.1 Instrument Classes
40(2)
3.2 The Spectrometers
42(12)
3.2.1 Experimental Observation Time
43(2)
3.2.2 The Direct Geometry Spectrometer
45(3)
3.2.3 The Indirect Geometry Spectrometer
48(3)
3.2.4 Neutron Spin Echo (NSE)
51(3)
3.3 Polarisation Analysis Options on Direct and Indirect Instruments
54(1)
3.4 The International QENS Instrument Landscape
55(5)
References
60(3)
Part 2 Measurement
63(42)
4 Facility Access
65(7)
4.1 You Have an Idea...
65(1)
4.2 Before Writing Your Proposal
66(1)
4.3 Which Facility Should You Choose?
67(1)
4.4 What Type of Proposal Should You Submit
67(2)
4.5 The Science Case
69(1)
4.6 The Proposal Review Process
70(1)
4.7 Remembered... But for the Wrong Reasons!
71(1)
5 The Measurement
72(12)
5.1 Initial Considerations
72(5)
5.1.1 Sample Thickness
72(2)
5.1.2 Sample Container and Orientation
74(3)
5.2 Instrument Configuration
77(3)
5.2.1 Symmetric vs. Non-symmetric S(Q,ω)
78(1)
5.2.2 Elastic Fixed Window Scan (EFWS)
79(1)
5.2.3 Inelastic Fixed Window Scan (IFWS)
80(1)
5.3 Preliminary Measurements and Checks
80(3)
5.3.1 Instrument Resolution and Empty Sample Container
80(2)
5.3.2 Sample Transmission
82(1)
5.3.3 Five Simple Rules
82(1)
Reference
83(1)
6 Data Reduction
84(21)
6.1 Basics of Data Reduction
84(1)
6.2 Reducing the Data: Direct and Indirect Geometry
85(8)
6.2.1 Normalisation, Masking and Detector Efficiency Correction
85(2)
6.2.2 Absorption Corrections and Empty Can Subtraction
87(2)
6.2.3 An Alternative Philosophy
89(1)
6.2.4 Conversion to S(Q,ω)
90(1)
6.2.5 Multiple Scattering Considerations
91(2)
6.3 Reducing the Data: Neutron Spin Echo
93(10)
6.3.1 The Echo
95(4)
6.3.2 Background Considerations
99(1)
6.3.3 Instrument Resolution
99(2)
6.3.4 Detectors and Visualisation
101(2)
References
103(2)
Part 3 Analysis
105(37)
7 Elastic and Inelastic Fixed Window Scans
107(13)
7.1 Elastic Fixed Window Scans (EFWS)
107(9)
7.1.1 Basic Modelling of Iel1((Q,T)
112(4)
7.2 Inelastic Fixed Window Scans (IFWS)
116(3)
References
119(1)
8 S(Q,ω)and I(Q,t)
120(20)
8.1 Analysis of the Dynamic Structure Factor, S(Q,ω)
120(7)
8.1.1 Translational Diffusion
123(1)
8.1.2 Localised Diffusion
124(3)
8.1.3 Jump Restricted Diffusion
127(1)
8.2 Susceptibility, Χ"(Q,ν)
127(3)
8.3 Analysis of the Intermediate Scattering Function, I(Q,t)
130(4)
8.4 A Word About Water
134(2)
8.5 Further Reading
136(1)
References
137(3)
9 And Finally
140(2)
References
141(1)
Appendix 1 Conversion Factors
142(2)
Reference
143(1)
Appendix 2 Supporting Measurements
144(3)
References
146(1)
Appendix 3 Sample Cell `Background' Features
147(1)
Subject Index 148
Mark Telling is a senior research scientist who has over a decades experience using, developing and advising on neutron methods, in particular the QENS technique. His personal research interests focus on bio-materials. Mark is a visiting lecturer in the Department of Materials, University of Oxford and has instructed students at the Universities of Rome (as Visiting Professor) and Copenhagen. Mark has over 100 peer reviewed research publications as either first or co-author and sits on several international research facilities advisory panels. He is an active student mentor (The Madrinha Trust) and a Science, Technology, Engineering and Mathematics (STEM) Ambassador.