The Markov Chain method is used to obtain an exact solution to the pro
blem of deriving the count rate, for time correlated pulses arising in
passive neutron assay, in the presence of a non-extending dead time.
While the discussion presented in the main text assumes only singlets
and doublets in the pulse train, extension to include higher multiplic
ities is described in the Appendix. (C) 1998 Published by Elsevier Sci
ence Ltd. All rights reserved.