6 research outputs found
Evidence for a Novel Reaction Mechanism of a Prompt Shock-Induced Fission Following the Fusion of 78Kr and 40Ca Nuclei at E/A =10 MeV
An analysis of experimental data from the inverse-kinematics ISODEC
experiment on 78Kr+40Ca reaction at a bombarding energy of 10 AMeV has revealed
signatures of a hitherto unknown reaction mechanism, intermediate between the
classical damped binary collisions and fusion-fission, but also substantially
different from what is being termed in the literature as fast fission or quasi
fission. These signatures point to a scenario where the system fuses
transiently while virtually equilibrating mass asymmetry and energy and, yet,
keeping part of the energy stored in a collective shock-imparted and, possibly,
angular momentum bearing form of excitation. Subsequently the system fissions
dynamically along the collision or shock axis with the emerging fragments
featuring a broad mass spectrum centered around symmetric fission, relative
velocities somewhat higher along the fission axis than in transverse direction,
and virtually no intrinsic spin. The class of massasymmetric fission events
shows a distinct preference for the more massive fragments to proceed along the
beam direction, a characteristic reminiscent of that reported earlier for
dynamic fragmentation of projectile-like fragments alone and pointing to the
memory of the initial mass and velocity distribution.Comment: 5 PAGES, 6 FIGURE
Study of the quasi-projectile in Sn + Ni and Sn + Ni reactions
Matiere Nucleaire NIMInternational audienc
Dynamical multi-break processes in the Sn + Ni system at 35 MeV/nucleon and CoMD-II calculation
Matiere Nucleaire NIMInternational audienc
Dynamical multi-break processes in the Sn + Ni system at 35 MeV/nucleon and CoMD-II calculation
Matiere Nucleaire NIMInternational audienc
Isospin effects in neutron-rich and neutron-poor Sn+Ni systems
Matiere Nucleaire NIMInternational audienc