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