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Some Applications of Stochastic Processes in Neutron Coincidence: Measurements Used in Nuclear Safeguards

  • W. Matthes

Abstract

Pulse-correlation techniques are widely used in non-destructive analysis of the unknown amounts of fissile material in ‘Probes’. We present a model of a branching process which we think is flexible enough to cover all neutron multiple correlation counting experiments. Equations describing the statistical properties of pulse trains from detector outputs are given and explicit expression for the moments of the pulse distribution are derived.

By investigating the event sequences of neutron-detector outputs the loss of counts and the modification of the ‘pair-correlation’ function due to the deadtime of the detection system may become essential. We try to provide an approximate theoretical description of the effect of the deadtime on count rates and correlation functions.

Keywords

Counting Rate Pulse Train Neutron Source Neutron Detector Detector Output 
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References

  1. [1).
    Van Kampen N.G. (1983) Stochastic Processes in Physics and Chemistry. North-Holland, AmsterdamGoogle Scholar
  2. [2]
    Bell I.G. (1965) Nucl. Sci. Eng. 21, 390Google Scholar
  3. [3]
    Saito K. and Tajo Y. (1967) Nucl. Sci. Eng. 30, 54Google Scholar
  4. [4]
    Matthes V. and Haas R. (1985) Ann. Nucl. Eng., Vol. 12, No. 12 p. 693CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1989

Authors and Affiliations

  • W. Matthes
    • 1
  1. 1.CCR EURATOMIspraItaly

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