S. Albergo
A5100686343- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Nuclear physics research studies
- Cosmology and Gravitation Theories
- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Neutrino Physics Research
- Atomic and Subatomic Physics Research
- Astrophysics and Cosmic Phenomena
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Nuclear reactor physics and engineering
- X-ray Spectroscopy and Fluorescence Analysis
- Radiation Therapy and Dosimetry
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Gamma-ray bursts and supernovae
- High-pressure geophysics and materials
- Black Holes and Theoretical Physics
- Ion-surface interactions and analysis
- International Science and Diplomacy
Istituto Nazionale di Fisica Nucleare, Sezione di Catania
2015-2024
Centro Siciliano di Fisica Nucleare e di Struttura della Materia
1986-2024
University of Catania
2015-2024
Universidade de São Paulo
2024
Institute of High Energy Physics
2013-2023
A. Alikhanyan National Laboratory
2023
University of Trieste
2016
Institute for Physics
1997-2002
Istituto Nazionale di Fisica Nucleare
1996-2002
Institute of Physics
1991
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...
The High Energy cosmic-Radiation Detection (HERD) facility is one of several space astronomy payloads the cosmic lighthouse program onboard China's Space Station, which planned for operation starting around 2020 about 10 years. main scientific objectives HERD are indirect dark matter search, precise ray spectrum and composition measurements up to knee energy, high energy gamma-ray monitoring survey. composed a 3-D cubic calorimeter (CALO) surrounded by microstrip silicon trackers (STKs) from...
Abstract Future liquid-argon DarkSide-20k and Argo detectors, designed for direct dark matter search, will be sensitive also to core-collapse supernova neutrinos, via coherent elastic neutrino-nucleus scattering. This interaction channel is flavor-insensitive with a high-cross section, enabling high-statistics neutrino detection target masses of ∼50 t ∼360 respectively. Thanks the low-energy threshold ∼0.5 keV nr achievable by exploiting ionization channel, have potential discover bursts...
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
The machine described in this document is an advanced Source of up to 20 MeV Gamma Rays based on Compton back-scattering, i.e. collision intense high power laser beam and a brightness electron with maximum kinetic energy about 720 MeV. Fully equipped collimation characterization systems, order generate, form fully measure the physical characteristics produced Ray beam. quality, phase space density, two colliding beams will be such that emitted ray characterized by tunability, spectral...
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...
Abstract Aria is a plant hosting $${350}\,\hbox {m}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>350</mml:mn><mml:mspace/><mml:mtext>m</mml:mtext></mml:mrow></mml:math> cryogenic isotopic distillation column, the tallest ever built, which being installed in mine shaft at Carbosulcis S.p.A., Nuraxi-Figus (SU), Italy. one of pillars argon dark-matter search experimental program, lead by Global Argon Dark Matter Collaboration. It was designed to reduce abundance...
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...
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...
Abstract The direct search for dark matter in the form of weakly interacting massive particles (WIMP) is performed by detecting nuclear recoils produced a target material from WIMP elastic scattering. experimental identification direction WIMP-induced crucial asset this field, as it enables unmistakable modulation signatures matter. Recoil Directionality (ReD) experiment was designed to probe such directional sensitivity argon dual-phase time projection chambers (TPC), that are widely...
Multifragmentation in fully reconstructed events from 1A GeV Kr and La collisions with C has been studied. Results are compared similar data for Au+C. The emitted charged particles fragments identified emission either a prompt first stage or second which the remnant resulting breaks up. nuclear charge, mass, excitation energy distributions of determined. total multiplicity, as well those stages obtained. Freeze-out temperatures thermal permit determination caloric curve. fragment charge...
The activation of materials due to exposure cosmic rays may become an important background source for experiments investigating rare event phenomena. DarkSide-20k, currently under construction at the Laboratori Nazionali del Gran Sasso, is a direct detection experiment galactic dark matter particles, using two-phase liquid-argon Time Projection Chamber (TPC) filled with 49.7 tonnes (active mass) Underground Argon (UAr) depleted in 39Ar. Despite outstanding capability discriminating...
Invariant mass analyses of (p,π±) pairs in 58Ni+Cu collisions at 1.97AGeV have been performed and show correlations resulting from the decays Δ resonance, Λ baryon, possibly N*(1440) resonance. A reduction is observed increases with collision centrality. Events generated by relativistic cascade model (ARC) also reveal a reduction. The related to size reaction volume details production mechanisms heavy ion collisions.Received 9 September...
The interactions of ${}^{36}\mathrm{Ar}$ projectile nuclei with energies 361, 546, and 765 MeV/nucleon ${}^{40}\mathrm{Ar}$ 352 MeV/nucleon, have been studied in a liquid-hydrogen target as part program to study relevance the problem cosmic-ray propagation interstellar medium. We measured cross sections for production isotopic fragments these interactions. variations mass, charge, energy, are examined insights into any systematic features this type fragmentation reaction that might aid...
A systematic analysis of multifragmentation (MF) in fully reconstructed events from $1A\mathrm{GeV}$ Au, La, and Kr collisions with C has been performed. These data are used to provide a definitive test the variable volume version statistical model (SMM). single set SMM parameters directly determined by semi-empirical mass formula after adjustable inverse level density parameter ${\ensuremath{\epsilon}}_{0}$ is fragment distributions. The results for second stage multiplicity, size biggest...
Transverse flow has been studied as a function of impact parameter for pions and protons from the reaction 1.15AGeV 197Au+197Au. We observe an “antiflow” behavior both π+ π− in peripheral collisions.Received 29 July 1996DOI:https://doi.org/10.1103/PhysRevLett.78.4165©1997 American Physical Society