M. Febbraro
A5003939738- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Neutrino Physics Research
- Atomic and Subatomic Physics Research
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Nuclear reactor physics and engineering
- Atomic and Molecular Physics
- Particle Detector Development and Performance
- Medical Imaging Techniques and Applications
- Astronomical and nuclear sciences
- Quantum Chromodynamics and Particle Interactions
- Astrophysics and Cosmic Phenomena
- Radiation Therapy and Dosimetry
- X-ray Spectroscopy and Fluorescence Analysis
- Chemical Reactions and Isotopes
- Quantum, superfluid, helium dynamics
- Gamma-ray bursts and supernovae
- Advanced Chemical Physics Studies
- Rare-earth and actinide compounds
- Astro and Planetary Science
- Radioactive Decay and Measurement Techniques
- Radiopharmaceutical Chemistry and Applications
- Scientific Research and Discoveries
U.S. Air Force Institute of Technology
2024
Wright-Patterson Air Force Base
2024
Oak Ridge National Laboratory
2015-2024
University of Warsaw
2024
National Centre for Nuclear Research
2024
Max Planck Institute for Physics
2021-2022
University of Tennessee at Knoxville
2015-2022
Lancaster University
2021-2022
Czech Technical University in Prague
2021-2022
TU Dortmund University
2021-2022
The coherent elastic scattering of neutrinos off nuclei has eluded detection for four decades, even though its predicted cross section is by far the largest all low-energy neutrino couplings. This mode interaction offers new opportunities to study properties and leads a miniaturization detector size, with potential technological applications. We observed this process at 6.7σ confidence level, using low-background, 14.6-kilogram CsI[Na] scintillator exposed emissions from Spallation Neutron...
We report the first measurement of coherent elastic neutrino-nucleus scattering (CEvNS) on argon using a liquid detector at Oak Ridge National Laboratory Spallation Neutron Source. Two independent analyses prefer CEvNS over background-only null hypothesis with greater than $3\ensuremath{\sigma}$ significance. The measured cross section, averaged incident neutrino flux, is $(2.2\ifmmode\pm\else\textpm\fi{}0.7)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}39}\text{ }\text{...
We measured the cross section of coherent elastic neutrino-nucleus scattering (CEvNS) using a CsI[Na] scintillating crystal in high flux neutrinos produced at Spallation Neutron Source Oak Ridge National Laboratory. New data collected before detector decommissioning have more than doubled dataset since first observation CEvNS, achieved with this detector. Systematic uncertainties also been reduced an updated quenching model, allowing for improved precision. With these analysis improvements,...
This Letter reports the first scientific results from observation of antineutrinos emitted by fission products $^{235}\mathrm{U}$ at High Flux Isotope Reactor. PROSPECT, Precision Reactor Oscillation and Spectrum Experiment, consists a segmented 4 ton $^{6}\mathrm{Li}$-doped liquid scintillator detector covering baseline range 7--9 m reactor operating under less than 1 water equivalent overburden. Data collected during 33 live days operation nominal power 85 MW yield detection $25\text{...
We summarize the recent progress of Axion Longitudinal Plasma Haloscope (ALPHA) Consortium, a new experimental collaboration to build plasma haloscope search for axions and dark photons. The is novel method detection resonant conversion light matter ALPHA will be sensitive QCD over almost decade parameter space, potentially discovering resolving strong $CP$ problem. Unlike traditional cavity haloscopes, which are generally limited in volume by Compton wavelength matter, haloscopes use wire...
The COHERENT Collaboration searched for scalar dark matter particles produced at the Spallation Neutron Source with masses between 1 and 220 MeV/c^{2} using a CsI[Na] scintillation detector sensitive to nuclear recoils above 9 keV_{nr}. No evidence is found we thus place limits on allowed parameter space. With this low-threshold detector, are coherent elastic scattering nuclei. cross section process orders of magnitude higher than other processes historically used accelerator-based...
Fusion cross sections were measured for the exotic proton-halo nucleus ⁸B incident on a ⁵⁸Ni target at several energies near Coulomb barrier. This is first experiment to report fusion of nucleus. The resulting excitation function shows striking enhancement with respect expectations normal projectiles. Evidence presented that sum and breakup yields saturates total reaction section.
The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, is designed to make a precise measurement of the antineutrino spectrum from highly-enriched uranium reactor probe eV-scale sterile neutrinos by searching for neutrino oscillations over meter-long distances. PROSPECT conceived as 2-phase experiment utilizing segmented $^6$Li-doped liquid scintillator detectors both efficient detection antineutrinos through inverse beta decay reaction excellent background discrimination....
The COHERENT experiment is well poised to test sub-GeV dark matter models using low-energy recoil detectors sensitive coherent elastic neutrino-nucleus scattering (CEvNS) in the $\pi$-DAR neutrino beam produced by Spallation Neutron Source. We show how a planned 750-kg liquid argon scintillation detector would place leading limits on scalar light models, over two orders of magnitude mass, for particles through vector and leptophobic portals absence other effects beyond standard model....
We utilize room-temperature uniaxial pressing at applied loads achievable with low-cost, laboratory-scale presses to fabricate freestanding CH3NH3PbX3 (X– = Br–, Cl–) polycrystalline ceramics millimeter thicknesses and optical transparency up ∼70% in the infrared. As-fabricated perovskite can be produced desirable form factors (i.e., size, shape, thickness) high-quality surfaces without any postprocessing (e.g., cutting or polishing). This method should broadly applicable a large swath of...
The clustering of $\ensuremath{\alpha}$ particles in atomic nuclei results the self-organization various geometrical arrangements at femtometer scale. one-dimensional alignment multiple is known as linear-chain structure, evidence which has been highly elusive. We show via resonant elastic and inelastic scattering a radioactive $^{10}\mathrm{Be}$ beam that excited states neutron-rich nucleus $^{14}\mathrm{C}$ agree with recent predictions structure based on an antisymmetrized molecular...
The structure of ${}^{10}$Be was studied via resonant $\ensuremath{\alpha}$-particle scattering a neutron-rich ${}^{6}$He beam. A time projection chamber, PAT-TPC, operated in an active-target mode to provide gaseous ${}^{4}$He target and trace the beam reaction products traversing its active tracking volume. This significantly lowered detection threshold at low energies. Elastic scattering, inelastic 2${}^{+}$ state, ${}^{6}$He($\ensuremath{\alpha}$, 2$n$)${}^{8}$Be were measured below...
This Letter reports the first measurement of $^{235}$U $\overline{\nu_{e}}$ energy spectrum by PROSPECT, Precision Reactor Oscillation and Spectrum experiment, operating 7.9m from 85MW$_{\mathrm{th}}$ highly-enriched uranium (HEU) High Flux Isotope Reactor. With a surface-based, segmented detector, PROSPECT has observed 31678$\pm$304 (stat.) $\overline{\nu_{e}}$-induced inverse beta decays (IBD), largest sample HEU fission to date, 99% which are attributed $^{235}$U. Despite broad agreement,...
We propose the construction of LEGEND-1000, ton-scale Large Enriched Germanium Experiment for Neutrinoless $\beta \beta$ Decay. This international experiment is designed to answer one highest priority questions in fundamental physics. It consists 1000 kg Ge detectors enriched more than 90% $^{76}$Ge isotope operated a liquid argon active shield at deep underground laboratory. By combining lowest background levels with best energy resolution field, LEGEND-1000 will perform...
The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory is a pulsed source of neutrons and, as by-product this operation, an intense neutrinos via stopped-pion decay. COHERENT collaboration uses to investigate coherent elastic neutrino-nucleus scattering and other physics with suite detectors. This work includes description our geant4 simulation neutrino production the SNS flux calculation which informs studies. We estimate uncertainty $\ensuremath{\sim}10%$ level based on...
Additive manufacturing techniques enable a wide range of possibilities for novel radiation detectors spanning simple to highly complex geometries, multi-material composites, and metamaterials that are either impossible or cost prohibitive produce using conventional methods. The present work identifies set promising formulations photocurable scintillator resins capable neutron-gamma pulse shape discrimination (PSD) support the additive fast neutron detectors. development these utilizes...
Coherent elastic neutrino-nucleus scattering (CEvNS) is the dominant neutrino channel for neutrinos of energy $E_\nu < 100$ MeV. We report a limit this process using data collected in an engineering run 29 kg CENNS-10 liquid argon detector located 27.5 m from Oak Ridge National Laboratory Spallation Neutron Source (SNS) Hg target with $4.2\times 10^{22}$ protons on target. The dataset yielded $< 7.4$ observed CEvNS events implying cross section process, averaged over SNS pion decay-at-rest...
The discovery of scintillation in the blue regime from poly(ethylene naphthalate) (PEN), a commonly used high-performance industrial polyester plastic, has sparked interest physics community as new type plastic scintillator material. This observation addition to its good mechanical and radiopurity properties makes PEN an attractive candidate active structure for low-background experiments. paper reports on investigations potential terms production tests custom made tiles various light output...