  The present work concerns two successful models used today: Point by Point
(PbP) and the Monte Carlo approaches. The description of the PbP model and of
the extended Los Alamos model for higher energies that takes into account the
secondary chains and ways is given in Chapter II. In this chapter are given
also examples of PbP and most probable fragmentation approach calculations for
various quantities which characterize prompt emission: multi-parametric
matrices, quantities as a function of fragment mass, quantities as a function
of the TKE and total average quantities, for different spontaneous and neutron
induced fissioning systems. Special care was given to the TXE partition between
the fully accelerated fission fragments, two partition methods used in the PbP
model being discussed in details. In Chapter III is given the description of
the Monte Carlo treatment included in the FIFRELIN code. Only those aspects
that differ from the PbP treatment are emphasized. A special attention is given
to the latest developments of the code concerning the inclusion of the energy
dependent compound nucleus cross section of the inverse process of neutron
evaporation from fragments. In this chapter examples of calculation with the
FIFRELIN code for the case of the standard fissioning system 252Cf(SF) are
given. Original results for several plutonium spontaneous fissioning systems
(236,238,240,242,244Pu) and one neutron induced fissioning system
(239Pu(nth,f)) obtained with both PbP and Monte Carlo treatments are given in
Chapter IV. The last chapter includes an overview of the most important
conclusions resulting from the intercomparison of the results obtained with
both treatments in chapter IV.
