D. Campana
A5010869054- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Solar and Space Plasma Dynamics
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Atomic and Subatomic Physics Research
- Radiation Therapy and Dosimetry
- Nuclear Physics and Applications
- Earthquake Detection and Analysis
- Radiation Detection and Scintillator Technologies
- Atmospheric Ozone and Climate
- Gamma-ray bursts and supernovae
- Geomagnetism and Paleomagnetism Studies
- Scientific Research and Discoveries
- Muon and positron interactions and applications
- Particle Accelerators and Free-Electron Lasers
- High-Energy Particle Collisions Research
- Photocathodes and Microchannel Plates
- Radio Astronomy Observations and Technology
- Solar Radiation and Photovoltaics
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2016-2025
Istituto Nazionale di Fisica Nucleare
1990-2023
University of California, Los Angeles
2016-2023
National Institute for Astrophysics
2023
Istituto Nazionale di Fisica Nucleare, Sezione di Torino
2023
Osservatorio Astrofisico di Torino
2023
Institute for Physics
2020
University of Naples Federico II
2008-2019
Agenzia Spaziale Italiana
2019
Lehman College
2018
Protons and helium nuclei are the most abundant components of cosmic radiation. Precise measurements their fluxes needed to understand acceleration subsequent propagation rays in our Galaxy. We report precision proton spectra rigidity range 1 gigavolt 1.2 teravolts performed by satellite-borne experiment PAMELA (payload for antimatter matter exploration light-nuclei astrophysics). find that spectral shapes these two species different cannot be described well a single power law. These data...
The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray antiproton flux and antiproton-to-proton ratio which extends previously published measurements down 60 MeV up 180 GeV in kinetic energy. During 850 days data acquisition approximately 1500 antiprotons were observed. are consistent with purely secondary production Galaxy. More precise models required for complete interpretation results.
A new measurement of the cosmic-ray antiproton-to-proton flux ratio between 1 and 100 GeV is presented. The results were obtained with PAMELA experiment, which was launched into low-Earth orbit on-board Resurs-DK1 satellite on June 15th 2006. During 500 days data collection a total about 1000 antiprotons have been identified, including above an energy 20 GeV. high-energy are tenfold improvement in statistics respect to all previously published data. follow trend expected from secondary...
Precision measurements of the electron component in cosmic radiation provide important information about origin and propagation rays Galaxy. Here we present new results regarding negatively charged electrons between 1 625 GeV performed by satellite-borne experiment PAMELA. This is first time that cosmic-ray have been identified above 50 GeV. The spectrum can be described with a single power law energy dependence spectral index -3.18 +- 0.05 region influenced solar wind (> 30 GeV). No...
Precision measurements of the positron component in cosmic radiation provide important information about propagation rays and nature particle sources our Galaxy. The satellite-borne experiment PAMELA has been used to make a new measurement cosmic-ray flux fraction that extends previously published up 300 GeV kinetic energy. combined energy spectrum unique tool constrain interpretation models. During recent solar minimum activity period from July 2006 December 2009 approximately 24500...
The energy spectra of galactic cosmic rays carry fundamental information regarding their origin and propagation. These spectra, when measured near Earth, are significantly affected by the solar magnetic field. A comprehensive description radiation must therefore include transport modulation inside heliosphere. During end last decade Sun underwent a peculiarly long quiet phase well suited to study processes. In this paper we present proton from July 2006 December 2009 PAMELA. large collected...
We present a measurement of the flux neutrino-induced upgoing muons (<Eν>∼ 100 GeV) using MACRO detector. The ratio number observed to expected events integrated over all zenith angles is 0.74 ±0.036 (stat) ±0.046 (systematic) ±0.13 (theoretical). distribution for −1.0≤cosθ≤−0.1 does not fit well with no oscillation expectation, giving maximum probability χ2 0.1%. acceptance detector has been extensively studied downgoing muons, independent analyses and Monte Carlo simulations. other...
Precision measurements of the electron component in cosmic radiation provide important information about origin and propagation rays Galaxy not accessible from study cosmic-ray nuclear components due to their differing diffusion energy-loss processes. However, when measured near Earth, effects modulation galactic heliosphere, particularly significant for energies up at least 30 GeV, must be properly taken into account. In this paper (e^-) spectra by PAMELA down 70 MeV July 2006 December 2009...
The propagation of cosmic rays inside our galaxy plays a fundamental role in shaping their injection spectra into those observed at Earth. One the best tools to investigate this issue is ratio fluxes for secondary and primary species. boron-to-carbon (B/C) ratio, particular, sensitive probe mechanisms. This paper presents new measurements absolute boron carbon nuclei, as well B/C from PAMELA space experiment. results span range 0.44 - 129 GeV/n kinetic energy data taken period July 2006 March 2008.
Precise measurements of the time-dependent intensity low energy ($<50$ GeV) galactic cosmic rays are fundamental to test and improve models which describe their propagation inside heliosphere. Especially, data spanning different solar activity periods, i.e. from minimum maximum, needed achieve comprehensive understanding such physical phenomenon. The phase between 23$^{rd}$ 24$^{th}$ cycles was peculiarly long, extending up beginning 2010 followed by maximum phase, reached during early 2014....
The Extreme Universe Space Observatory on a Super Pressure Balloon 1 (EUSO-SPB1) was launched in 2017 April from Wanaka, New Zealand. plan of this mission opportunity NASA super pressure balloon test flight to circle the southern hemisphere. primary scientific goal make first observations ultra-high-energy cosmic-ray extensive air showers (EASs) by looking down atmosphere with an ultraviolet (UV) fluorescence telescope suborbital altitude (33~km). After 12~days and 4~hours aloft, terminated...
The angular distribution of upward-going muons produced by atmospheric neutrinos in the rock below MACRO detector show anomalies good agreement with two flavor neutrino-mu ==> neutrino-tau oscillations maximum mixing and Delta m**2 around 0.0024 eV**2. Exploiting dependence magnitude matter effect on oscillation channel, using a set 809 observed MACRO, we that neutrino-sterile is disfavored 99% C.L. respect to neutrino-tau.
The vertical underground muon intensity has been measured in the slant depth range 3200–7000 hg cm−2 (standard rock) with completed lower part of MACRO detector at Gran Sasso laboratory, using a large sample data. These observations are used to compute surface flux and primary ''all-nucleon'' spectrum. An analysis systematic uncertainties introduced by interaction models atmosphere propagation muons is presented. A comparison our results published data also presented.Received 3 April...
In this paper the design, construction and performance of lower part first supermodule MACRO detector is described.
We present the space spectrometer PAMELA observations of proton and helium fluxes during December 13 14, 2006 solar particle events. This is first direct measurement energetic particles in with a single instrument energy range from $\sim$ 80 MeV/n up to 3 GeV/n. In event measured spectra protons were compared results obtained by neutron monitors other detectors. Our measurements show spectral behaviour different those derived monitor network. No satisfactory analytical fitting was found for...
Cosmic-ray electrons and positrons are a unique probe of the propagation cosmic rays as well nature distribution particle sources in our Galaxy. Recent measurements these particles challenging basic understanding mechanisms production, acceleration, rays. Particularly striking differences between low energy results collected by space-borne PAMELA AMS-02 experiments older pointing to sign-charge dependence solar modulation cosmic-ray spectra. The experiment has been measuring time variation...