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Studying atomic dynamics with coherent x-rays / Michael Leitner.
Springer Nature - Springer Physics and Astronomy eBooks 2012 English International Available online
View online- Format:
- Book
- Thesis/Dissertation
- Author/Creator:
- Leitner, Michael.
- Series:
- Springer theses.
- Springer theses : recognizing outstanding Ph.D. research, 2190-5053
- Language:
- English
- Subjects (All):
- Atomic spectroscopy.
- Condensed matter.
- Coherent states.
- Physical Description:
- 1 online resource (103 p.)
- Edition:
- 1st ed. 2012.
- Place of Publication:
- New York : Springer, 2012.
- Language Note:
- English
- Summary:
- Diffusion in solids at moderate temperatures is a well-known phenomenon. However, direct experimental evidence about the responsible atomic-scale mechanisms has been scarce, due to difficulties in probing the relevant length- and time-scales. The present thesis deals with the application of X-ray Photon Correlation Spectroscopy (XPCS) for answering such questions. This is an established method for the study of slow dynamics on length-scales of a few nanometres. The scattered intensity in the diffuse regime, i.e. corresponding to atomic distances, is very low, however, and so it has so far been considered impossible to use XPCS for this problem. Threefold progress is reported in this work: It proposes a number of systems selected for high diffuse intensity, it optimizes the photon detection and data evaluation procedures, and it establishes theoretical models for interpreting the results. Together these advances allowed the first successful atomic-scale XPCS experiment, which elucidated the role of preferred configurations for atomic jumps in a copper-gold alloy. The growth in available coherent X-ray intensity together with next-generation X-ray sources will open up a wide field of application for this new method.
- Contents:
- Introduction
- Theory
- Linking Theory to Experiments
- Characteristics of Diffusion in Selected Systems
- Data Evaluation
- Considerations Concerning the Experiment
- Experimental Results
- Outlook
- Appendix.
- Notes:
- "Doctoral thesis accepted by University of Vienna, Austria."
- Thesis (Ph. D.)-- University of Vienna.
- Includes bibliographical references.
- ISBN:
- 9786613577795
- 9783642241215
- 3642241212
- 9781280399879
- 1280399872
- OCLC:
- 779200691
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