A5115604357- Nuclear physics research studies
- Atomic and Molecular Physics
- Quantum Chromodynamics and Particle Interactions
- Nuclear Physics and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Astronomical and nuclear sciences
- Quantum chaos and dynamical systems
- Quantum, superfluid, helium dynamics
- Advanced Chemical Physics Studies
- Advanced NMR Techniques and Applications
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- High-pressure geophysics and materials
- Particle accelerators and beam dynamics
- X-ray Spectroscopy and Fluorescence Analysis
- Nuclear reactor physics and engineering
- Cold Fusion and Nuclear Reactions
- Spectroscopy and Quantum Chemical Studies
- Crystallography and Radiation Phenomena
- Strong Light-Matter Interactions
- Particle physics theoretical and experimental studies
- Ion-surface interactions and analysis
- Theoretical and Computational Physics
- Laser-Plasma Interactions and Diagnostics
- Particle Accelerators and Free-Electron Lasers
Universidade de São Paulo
2011-2020
Instituto Tecnológico de Aeronáutica
1984-2020
Departamento de Ciência e Tecnologia
2018
Universidade Federal Fluminense
2009-2013
Max Planck Institute for the Physics of Complex Systems
2007-2010
Universidade Estadual Paulista (Unesp)
1999-2010
Instituto de Física La Plata
2004-2010
Universidad Nacional de La Plata
2007-2010
Consejo Nacional de Investigaciones Científicas y Técnicas
2010
Massachusetts Institute of Technology
1983-2009
Extensive systematizations of theoretical and experimental nuclear densities optical potential strengths extracted from heavy-ion elastic scattering data analyses at low intermediate energies are presented. The energy dependence the is accounted for within a model based on nonlocal nature interaction. systematics indicates that can be described in simple global way through double-folding shape, which basically depends only density nucleons partners collision. possibility extracting...
A parameter-free nonlocal double-folding-inspired interaction is proposed for the nucleus-nucleus systems. Excellent reproductions of elastic scattering differential cross section data were obtained several systems over a wide range bombarding energies. Our results should be value in description other many-body
The cross sections for the fusion of $^{11}\mathrm{Li}$ with $^{208}\mathrm{Pb}$ and $^{238}\mathrm{U}$ are calculated at near-barrier energies. coupling entrance channel to soft giant dipole resonance in is taken into account together breakup $^{9}\mathrm{Li}$+2n. deformation also considered. section found exhibit important structure around barrier.
It is pointed out that the usual threshold anomaly, found operative in energy behavior of imaginary and real parts optical potential representing elastic scattering tightly bound nuclei at near- below-barrier energies, suffers a drastic qualitative change case weakly nuclei. Owing to strong coupling breakup channel even sub-barrier strength seems increase as lowered below natural barrier threshold; this accompanied by decrease strength. This feature consistent with dispersion relation. The...
In the atomic Bose-Einstein condensate, interactions that bring a binary atom system to an intermediate state molecule in Feshbach resonance create second condensate component of molecules. The and molecular condensates coherently exchange pairs atoms. We discuss signature coherent intercondensate exchange: Josephson-like oscillations populations response sudden change energy detuning. dependence many-body ground on volume suggests on-resonant is dilute with liquidlike property...
We study the behavior of fusion, breakup, reaction, and elastic scattering different projectiles on $^{64}\mathrm{Zn}$, at near above barrier energies. present fusion data with tightly bound $^{16}\mathrm{O}$ stable weakly $^{6}\mathrm{Li}$, $^{7}\mathrm{Li}$, $^{9}\mathrm{Be}$ projectiles. The are analyzed by coupled channel calculations. total cross sections for these systems not affected breakup process energies barrier. (noncapture) section is important close to Coulomb increases...
The elastic scattering of the radioactive halo nucleus 6He on 27Al target was measured at four energies close to Coulomb barrier using RIBRAS (Radioactive Ion Beams in Brazil) facility. Sao Paulo Potential(SPP) used and its diffuseness imaginary strength were adjusted fit angular distributions. Reaction cross-sections extracted from optical model fits. reduced reaction are similar those for stable, weakly bound projectiles as {6,7}Li, 9Be larger than tightly projectile 16O 27Al.
Nonlocal interactions are an intrinsically quantum phenomenon. In this work we point out that, in the context of heavy ions, such can be studied through refractive elastic scattering these systems at intermediate energies. We show that most observed energy dependence local equivalent bare potential arises from exchange nonlocality. The nonlocality parameter extracted data was found to very close one obtained folding models. effective mass colliding, heavy-ion, system nucleon nuclear matter.
We analyze the mean-field equilibrium states of a homogeneous Bose-Einstein condensate boson particles in different internal states, possibly presence an Josephson interaction, and we describe quantum fluctuations by constructing explicit form Bogoliubov transformation that characterizes quasiparticle excitations system. The derivation is based on simple geometrical picture which leads to convenient parametrization transformation. Our calculations physical properties, such as depletions...
Elastic and inelastic scattering cross sections of the system ${}^{12}\mathrm{C}{+}^{12}\mathrm{C}$ at several bombarding energies are calculated within a parameterfree model using recently developed nonlocal energy-independent bare potential. Comparison with data indicates that such calculation gives accurately average values sections. The ${}^{12}\mathrm{C}{+}^{11}\mathrm{Li}$ is also discussed.
We describe the behaviour of fusion, break-up, reaction cross sections and elastic scattering weakly bound nuclei, at near above barrier energies. The total fusion are not affected by break-up process this energy regime. important energies close Coulomb barrier, even in systems with light targets, increase sections. also show that sub-barrier is responsible for vanishing usual threshold anomaly optical potential gives rise to a new type anomaly, named us as anomaly.