Nuclear flow excitation function

Nuclear flow excitation function.

We consider the dependence of collective flow on the nuclear surface thickness in a Boltzmann–Uehling–Uhlenbeck transport model of heavy ion collisions. Well defined surfaces are introduced by giving test particles a Gaussian density profile of constant width. Zeros of the flow excitation function are as much influenced by the surface thickness as the nuclear equation of state, and the dependen...

Excitation Function of the Longitudinal Expansion in Central Nuclear Collisions

Longitudinal hadron spectra from Proton-Proton (pp) and nucleusnucleus (AA) collisions from Elab = 2 AGeV to √ s = 200 AGeV are investigated. The widths of the rapidity spectra for various particle species increases monotonously with energy. The present calculation indicates no sign of a step like behaviour as excepted from the Kaon transverse mass systematics. For Pions, the transport simulati...

Nuclear Excitation Processes in Astrophysical Plasmas

Excitation function of nucleon and pion elliptic flow in relativistic heavy-ion collisions

Within a relativistic transport (ART) model for heavy-ion collisions, we show that the recently observed characteristic change from out-of-plane to in-plane elliptic flow of protons in mid-central Au+Au collisions as the incident energy increases is consistent with the calculated results using a stiff nuclear equation of state (K= 380 MeV). We have also studied the elliptical flow of pions and ...

Piezoelectric Energy Harvesting under Air Flow Excitation

This study focuses on the numerical analysis of a high efficiency Energy Harvesting device, based on piezoelectric materials, for the sustainability of smart buildings, structures and infrastructures. Before that, a comprehensive literature review on the topic takes place. The device consists in an aerodynamic fin attached to a piezoelectric element that makes use of the air flow to harvest ene...