A. Insolia
A5023472300- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- Radio Astronomy Observations and Technology
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Nuclear Physics and Applications
- Quantum Chromodynamics and Particle Interactions
- Gamma-ray bursts and supernovae
- Atmospheric Ozone and Climate
- Nuclear reactor physics and engineering
- Calibration and Measurement Techniques
- Astronomical Observations and Instrumentation
- Advanced Chemical Physics Studies
- Atomic and Molecular Physics
- Quantum, superfluid, helium dynamics
- Advanced NMR Techniques and Applications
- Photocathodes and Microchannel Plates
- Pulsars and Gravitational Waves Research
- Radiation Detection and Scintillator Technologies
- Ionosphere and magnetosphere dynamics
- Adaptive optics and wavefront sensing
- Atmospheric aerosols and clouds
Istituto Nazionale di Fisica Nucleare, Sezione di Catania
2015-2024
University of Catania
2015-2024
Institute of Astronomy and Space Physics
2010-2023
Consejo Nacional de Investigaciones Científicas y Técnicas
2010-2023
Universidad Nacional de La Plata
2010-2023
University of Buenos Aires
2010-2023
Instituto de Tecnologías en Detección y Astropartículas
2016-2023
National University of General San Martín
2016-2023
National Technological University
2010-2023
Pierre Auger Observatory
2007-2023
Using reverse kinematics, we have studied the breakup of $1.0A$ GeV gold nuclei incident on a carbon target. The detector system permitted exclusive event reconstruction nearly all charged reaction products. moments resulting fragment distribution provide strong evidence that nuclear matter possesses critical point observable in finite nuclei. We determined values for exponents $\ensuremath{\gamma}$, $\ensuremath{\beta}$, and $\ensuremath{\tau}$. These are close to those liquid-gas systems...
An exclusive study of the interaction 1A GeV Au with C shows a separability into two stages: prompt stage involving emission most $Z\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1$ and some $Z\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2$ particles second decay an equilibrated remnant, which typically undergoes multifragmentation. The mean mass, charge, excitation energy, initial temperature ${T}_{i}$ remnant have been determined as function total charge multiplicity, $m$, has...
Exclusive measurements have been made of Au $+$Au reactions with beam energies ranging from 0.25 $A$ to 1.15 GeV. We present directed collective flow averaged over all light fragments masses up alphas, as well separate for protons, deuterons, tritons, ${}^{3}$He, ${}^{4}$He, and Li. The results show a strong increase the fragment mass at measured. Experimental are compared quantum molecular dynamics model. find that neither ``soft'' nor ``hard'' equation state can describe data entire range energies.
Multifragmentation MF results from 1AGeV Au on C have been compared with the Copenhagen statistical multifragmentation model (SMM). The complete charge, mass, and momentum reconstruction of projectile was used to identify high ejectiles leaving an excited remnant mass A, charge Z, excitation energy E* which subsequently multifragments. Measurement magnitude multiplicity (energy) dependence initial free volume breakup determines variable parametrization SMM. Very good agreement is obtained...
A systematic study of energy spectra for light particles emitted at midrapidity from Au+Au collisions E= (0.25–1.15) GeV reveals a significant nonthermal component consistent with collective radial flow. This is evaluated as function bombarding and event centrality. Comparisons to quantum molecular dynamics Boltzmann-Uehling-Uhlenbeck models are made different equations state.Received 15 August 1994DOI:https://doi.org/10.1103/PhysRevLett.75.2662©1995 American Physical Society
We study the spatial correlations between two particles (or holes) around a closed shell core in terms of probability distribution expressed as function c.m. coordinate $R$ and their relative $r$. find that mixing configurations induced by pairing force leads to centered regions corresponding larger values smaller $r$, compared case pure ${(j)}_{0}^{2}$ configuration. This tendency "surface clustering" is mainly due interference contributions coming from levels with different parity....
A high-statistics exclusive study of the multifragmentation 1A GeV gold on carbon has been performed. Particles with Z<~2 show evidence emission in a first prompt stage as well second equilibrium whereas fragments Z>~3 appear to be emitted essentially only stage. Two methods for separation particles into two stages are given and they agreement. The yields each determined function event charged particle multiplicity m. mass, nuclear charge, excitation energy per nucleon, temperature remnant...
E896 has measured Lambda production in 11.6A GeV/c Au-Au collisions over virtually the whole rapidity phase space. The midrapidity p(t) distributions have been for first time at this energy and appear to indicate that hyperons different freeze-out conditions than protons. A comparison with relativistic quantum molecular dynamics model shows while there is good shape agreement high predicts significantly slopes of m(t) spectra midrapidity. data, where overlap occurs, are consistent previously...
We describe plans for the development of Southern Wide-field Gamma-ray Observatory (SWGO), a next-generation instrument with sensitivity to very-high-energy (VHE) band be constructed in Hemisphere. SWGO will provide wide-field coverage large portion southern sky, effectively complementing current and future instruments global multi-messenger effort understand extreme astrophysical phenomena throughout universe. A detailed description science topics addressed by is available case white paper...
A microscopic approach to the alpha decay problem in deformed nuclei is presented. The nuclear wave functions are calculated frame of Nilsson+BCS approximation, making use a realistic mean field. large configuration space has been employed calculation formation amplitude while penetration process treated within WKB approximation. widths agree with experimental data factor about 3. Effects due deformation also discussed. Applications presented for Ra, Rn, and Th isotopes.
The fragment yields from the multifragmentation of gold, lanthanum, and krypton nuclei obtained by EOS Collaboration are examined in terms Fisher’s droplet formalism modified to account for Coulomb energy. critical exponents σ τ surface energy coefficient c0 obtained. Estimates made pressure-temperature temperature-density coexistence curve finite neutral nuclear matter as well location point.Received 7 May 2002DOI:https://doi.org/10.1103/PhysRevC.67.024609©2003 American Physical Society
This paper reports the elemental production cross sections for 17 projectile-energy combinations with energies between 338 and 894 MeV/nucleon interacting in a liquid hydrogen target. These results were obtained from two runs at LBL Bevalac using projectiles ranging $^{22}\mathrm{Ne}$ to $^{58}\mathrm{Ni}$. Cross measured all fragment elements charges greater than or equal half charge of projectile. The show that, over energy ion range investigated, general decrease section decreasing is...
Angular distributions and the corresponding absolute \ensuremath{\alpha} decay widths are calculated microscopically in odd axially deformed nuclei. It is found that angular mainly determined by deformation. The available experimental data well reproduced.
A liquid hydrogen target was used to study the nuclear fragmentation of beams relativistic heavy ions, 22Ne 58Ni, over an energy range 400 900 MeV/nucleon. The experiments were carried out at Lawrence Berkeley Laboratory Bevalac HISS facility, using charge-velocity-rigidity method identify charged fragments. Here we describe general concept experiment and present total charge-changing cross sections obtained from 17 separate runs. These new measured display dependence which follows...