Fission data are essential inputs to reaction networks involved in nucleosynthesis simulations and nuclear forensics. In such applications as well the description of multi-chance fission, characteristics fission for odd-mass nuclei just important those even-even nuclei. The theories that aim at explicitly describing dynamics typically based on some variant mean-field theory. cases, treatment sy...

A transport calculation of the neutrons leaked to the environment by the JCO criticality accident was carried out based on three-dimensional geometrical models of the buildings within the JCO territory. Our work started from an initial step to simulate the leakage process of neutrons from the precipitation tank, and proceeded to a step to calculate the neutron propagation throughout the JCO fac...

The neutron population in a nuclear reactor is subject to fluctuations in time and in space due to the competition of diffusion by scattering, births by fission events, and deaths by absorptions. As such, fission chains provide a prototype model for the study of spatial clustering phenomena. In order for the reactor to be operated in stationary conditions at the critical point, the population o...

The time a nucleus needs to populate its deformation space is ruled by dissipation, that is, the transfer of energy between intrinsic and collective degrees of freedom. The study of fission allows for gaining information on the strength of dissipation within a broad range of deformation. For small deformations, the hindrance of fission caused by dissipation starts to be remarkable only at high ...

Statistical approaches have been widely used for describing the nuclear-fission process. They were quite successful in explaining several prominent features of the global nuclide distributions and many other aspects, while there are controversial conclusions on the origin of the even-odd effect in the nuclear-charge yields. We analyze the ingredients of the main statistical approaches to the ev...

We propose event by event velocity fluctuations of nuclear fission fragments as an additional interesting observable that gives access to the nuclear temperature in an independent way from spectral measurements and relates the diffusion and friction coefficients for the relative fragment coordinate in Kramer-like models (in which some aspects of fission can be understood as the diffusion of a c...

According to the criticality hypothesis , collective biological systems should operate in a special parameter region, close so-called critical points, where behavior undergoes qualitative change between different dynamical regimes. Critical exhibit unique properties, which may benefit information processing such as maximal responsiveness external stimuli. Besides neuronal and gene-regulatory ne...

One of the most familiar images in biology, even to high school students taking an introductory course, is that of newly duplicated chromosomes lined up along the center of a cell at the stage of cell division called metaphase. As the cell enters anaphase, microtubules, rod-like filaments that comprise the mitotic spindle, pull the chromosomes away from one another to opposite sides of the cell...