Chapter 7.5 Statistical fluctuations
Mathematical, physical and chemical tables
First Online Edition (2006)
Part 7. Measurement of intensities
Published Online: 1 JAN 2006
© International Union of Crystallography 2006
International Tables for Crystallography
How to Cite
Wilson, A. J. C. 2006. Statistical fluctuations. International Tables for Crystallography. C:7:7.5:666–676.
- Published Online: 1 JAN 2006
Chapter 7.5 discusses the effects of statistical fluctuation on the measurement of diffracted intensities. Fixed-time counting and fixed-count timing are compared. Complicating factors, such as detector dead time and source fluctuations are analyzed. The problem of measured-as-negative intensities is discussed, and strategies for optimization of counting time are analyzed.
- counting modes;
- fixed-count timing;
- fixed-time counting;
- measured-as-negative intensities;
- measurement optimization