  The production mechanism of highly excited nuclei in the Fermi energy domain
is investigated. A phenomenological approach, based on the exciton model, is
used for the description of pre-equilibrium emission. A model of deep inelastic
transfer is employed for the peripheral collisions in the post-pre-equilibrium
stage. An approach to describe more central collisions is proposed. A geometric
overlap formula is employed in a way suitable for given energy domain. A simple
geometric approach describing the interaction of participant and spectator
zones is used to determine the incomplete fusion channel. Excitation energies
of both fragments are determined. Results of the calculation are compared to
available experimental data and an overall satisfactorily agreement is
obtained. The model's ability to describe the production of the hot nuclei can
be employed in the study of multifragmentation and/or in the production of rare
beams.
