A FORWARD EQUATION FOR STOCHASTIC NEUTRON-TRANSPORT

A new formalism is developed for describing the stochastic neutron tra nsport by the forward approach. This is used to derive a forward stoch astic transport equation for this process. The first moment of this eq uation is the usual transport equation for the singlet density while h igher moments yield equations for the doublet and higher multiplet den sities. The present method avoids many of the difficulties inherent in the forward equation approach to the problem discussed by many author s as well as the rather complicated functional technique. The equation can however be converted into a simple functional form which is then used to establish a connection with the backward equation and a compac t derivation of the moments equations.