Unit:
Κατεύθυνση ΦυσικοχημείαLibrary of the School of Science
Supervisors info:
Γεώργιος Σουλιώτης Επίκ. Καθηγητής (Επιβλέπων), Αθανάσιος Τσεκούρας Επίκ. Καθηγητής, Ευστάθιος Στυλιάρης Αναπλ. Καθηγητής
Original Title:
Μικροσκοπική περιγραφή της πυρηνικής σχάσης χαμηλών και ενδιάμεσων ενεργειών με τη χρήση του μοντέλου CoMD (Constrained Molecular Dynamics)
Translated title:
Microscopic description of low and intermediate energy fission using the CoMD model (Constrained Molecular Dynamics).
Summary:
Motivated by the present state of affairs regarding fission research, we
initiated a systematic study of low and interediate energy fission calculations
using the code CoMD (Constrained Molecular Dynamics) of A. Bonasera and M.
Papa. The code implements an effective interaction with a nuclear-matter
compressibility of K=200 (soft EOS) with several forms of the
density-dependence of the nucleon symmetry potential. In addition, CoMD imposes
a constraint in the phase space occupation for each nucleon (restoring the
Pauli principle at each time step of the collision). Proper choice of the
surface parameters of the effective interaction has been made to describe
fission. In this thesis, we present our results of fission calculations for the
following reactions: p (27MeV)+232Th, p (63MeV)+232Th, p (30MeV)+235U, p (10
MeV) + 235U, p (60 MeV) + 235U, p (100 MeV) + 235U, p (100 MeV) + 238U, p (660
MeV) + 238U and n (10 MeV) + 179Hg. Calculated mass and energy distributions
are shown and compared with the experimental data for the above reactions. The
microscopic code CoMD can describe the complicated N-body dynamics of the
fission process, but proper adjustment of the parameters of the effective
interaction is necessary.
Keywords:
Nuclear fission, Fission fragments, Cross section, Nuclear reactions, Energy of the fission fragments
