Investigating the dynamics of fission with low-fissility highly-excited nuclei

Fragmentation of Spherical Radioactive Nuclei as a Novel Probe of Transient Effects in Fission

The escape from a metastable state is a problem that appears in many various fields such as fluid mechanics, chemistry or nuclear physics. Systems that are initially out of equilibrium display a transient behaviour during which relaxation in all degrees of freedom takes place. The proper understanding of transient effects occurring before a quasi-equilibrium is reached is important due to their...

KEWPIE2: A cascade code for the study of dynamical decay of excited nuclei

KEWPIE — a cascade code devoted to investigating the dynamical decay of excited nuclei, specially designed for treating very low probability events related to the synthesis of super-heavy nuclei formed in fusion-evaporation reactions — has been improved and rewritten in C++ programing language to become KEWPIE2. The current version of the code comprises various nuclear models concerning the lig...

Measurement of the fusion probability, PCN, for hot fusion reactions

Background: The cross section for forming a heavy evaporation residue in fusion reactions depends on the capture cross section, the fusion probability, PCN, i.e., the probability that the projectile-target system will evolve inside the fission saddle point to form a completely fused system rather than reseparating (quasifission), and the survival of the completely fused system against fission. ...

Decay of Highly Excited Nuclei Emission of Intermediate Mass Fragments Normal to the Fission Axis in Hot Heavy Nuclei

Shapes and Fissility of Highly Charged and Rapidly Rotating Levitated Liquid Drops.

We use diamagnetic levitation to investigate the shapes and the stability of free electrically charged and spinning liquid drops of volume ∼1 ml. In addition to binary fission and Taylor cone-jet fission modes observed at low and high charge density, respectively, we also observe an unusual mode which appears to be a hybrid of the two. Measurements of the angular momentum required to fission a ...