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Mostrando ítems 1-10 de 18
Ponencia
Global fluctuations in dissipative systems
(American Institute of Physics, 2009)
Our goal here is to investigate the influence of velocity correlations on the fluctuations of several global quantities for two different systems. In the first case, we study the fluctuations of the total number of particles, ...
Ponencia
Experimental determination of the 6,7Li nucleon densities
(American Institute of Physics, 2009)
In this work we present optical model analysis of new near barrier‐quasi‐elastic experimental data, for the systems 6,7Li+120Sn. From the analysis it was possible to extract the ground state nucleon densities of the weakly ...
Ponencia
Fluctuations of a piston on top of a fluidized granular gas
(American Institute of Physics, 2009)
A fluidized granular gas in presence of a gravitational field is considered. It is enclosed in a box with a movable piston on the top. Molecular dynamics simulation results show that, if the box is not too wide, the system ...
Ponencia
Decoherence as a Signature of an Excited State Quantum Phase Transition in Two Level Boson Systems
(American Institute of Physics, 2009)
We analyze the decoherence induced on a single qubit by the interaction with a two-level boson system with critical internal dynamics. We explore how the decoherence process is affected by the presence of quantum phase ...
Ponencia
Analysis of the elastic scattering measured with a 23.7 MeV 7Be beam on a 9Be target.
(American Institute of Physics, 2009)
We present new data for the reaction 7Be+9Be measured at Elab =23.7 MeV. The elastic scattering angular distribution has been analyzed using the phenomenological optical model and the coupled-channels method. In the ...
Ponencia
Secondary electrons detectors for beam tracking: Micromegas and wire chamber
(Institute of Physics Publishing, 2009)
SPIRAL2 or FAIR will be able to deliver beams of radioactive isotopes of low energy (less than 10 MeV/n). The emittance of these new beams will impose the use of beam tracking detectors to reconstruct the exact impact ...
Ponencia
On the relation between E(5)- models and the interacting boson model
(American Institute of Physics, 2009)
The connections between the Ε(5)-models (the original Ε(5) using an infinite square well, Ε(5) - β4 Ε(5) - β6 and Ε(5) - β8), based on particular solutions of the geometrical Bohr Hamiltonian with γ -unstable potentials, ...
Ponencia
The Scientific program with RIBRAS (Radioactive Ion Beams in Brasil)
(American Institute of Physics, 2009)
The Radioactive Ion Beams Facility (RIBRAS) is in operation since 2004 at the Pelletron Accelerator Laboratory of the University of São Paulo and consists of two superconducting solenoids capable of producing low energy ...
Ponencia
Treatment of continuum in nuclear reactions involving weakly bound systems. A simple model to test different prescriptions describing the coupling to continuum states.
(American Institute of Physics, 2009)
We exploit a model describing the break-up of weakly-bound nuclei that can be used as a laboratory for testing different prescriptions that have been advanced in the literature to take into account the near-by presence of ...
Ponencia
Overview of neutrino-nucleus quasielastic scattering
(AIP Publishing, 2009)
A review of quasielastic neutrino-nucleus scattering will be presented, with emphasis on bringing together the knowledge (and language) of neutrino physics, electron scattering, and nuclear structure communities. Assumptions ...