Statistical Error in Absorption Experiments

@article{Rose1948StatisticalEI,
  title={Statistical Error in Absorption Experiments},
  author={Morris Edgar Rose and Mathew M. Shapiro},
  journal={Physical Review},
  year={1948},
  volume={74},
  pages={1853-1864}
}
Abstract : In certain exponential absorption experiments, notably measurements of cross sections by transmission, it is important to achieve minimum statistical error in a limited time, or to minimize the counting time required to measure the absorption coefficient with a preassigned accuracy. The conditions required to attain these ends, i.e., the geometry for optimum transmission, and the best apportionment of counting times among the incident and transmitted beams and background, have been… 
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