G. Tagliente
A5072109852- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Nuclear physics research studies
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Nuclear Materials and Properties
- Astro and Planetary Science
- Particle Accelerators and Free-Electron Lasers
- Radiation Therapy and Dosimetry
- Quantum Chromodynamics and Particle Interactions
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Dark Matter and Cosmic Phenomena
- X-ray Spectroscopy and Fluorescence Analysis
- Medical Imaging Techniques and Applications
- Astronomical and nuclear sciences
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Advanced NMR Techniques and Applications
- Atomic and Molecular Physics
- Radiopharmaceutical Chemistry and Applications
- Scientific Research and Discoveries
- Horticultural and Viticultural Research
Istituto Nazionale di Fisica Nucleare
2013-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
2012-2024
Forschungszentrum Jülich
2009-2024
Friedrich-Alexander-Universität Erlangen-Nürnberg
2022-2024
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2022-2024
University of Ferrara
2022-2024
European Organization for Nuclear Research
2014-2023
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud
2017
Ghent University
2011-2013
Based on the notion that local dark-matter field of axions or axionlike particles (ALPs) in our Galaxy induces oscillating couplings to spins nucleons and nuclei (via electric dipole moment latter and/or paramagnetic axion-wind effect), we establish feasibility a new method search for ALPs storage rings. previous work allows us maintain in-plane polarization stored deuteron beam few hundred seconds, perform first proof-of-principle experiment at Cooler Synchrotron (COSY) scan momenta near...
This paper presents the successful application of a phase-lock feedback system to maintain resonance condition radio frequency (rf) spin rotator (specifically, an rf Wien filter) with respect 120 kHz precession in Cooler Synchrotron (COSY) storage ring. Real-time monitoring and filter signal allows relative phase between two be stabilized at arbitrary setpoint. The compensates for deviations by adjusting and/or as needed. With this method, variation demand standard deviation...
The $^{63}$Ni($n, \gamma$) cross section has been measured for the first time at neutron time-of-flight facility n\_TOF CERN from thermal energies up to 200 keV. In total, capture kernels of 12 (new) resonances were determined. Maxwellian Averaged Cross Sections calculated kT = 5 keV 100 with uncertainties around 20%. Stellar model calculations a 25 M$_\odot$ star show that new data have significant effect on $s$-process production $^{63}$Cu, $^{64}$Ni, and $^{64}$Zn in massive stars,...
We present model predictions for the Zr isotopic ratios produced by slow neutron captures in C-rich asymptotic giant branch (AGB) stars of masses 1.25 to 4 Msun and metallicities Z=0.01 0.03, compare them data from single meteoritic stardust silicon carbide (SiC) high-density graphite grains that condensed outflows these stars. using neutron-capture cross section Bao et al. (2000) n_TOF experiments at CERN, a new evaluation unstable isotope 95Zr, branching point leading production 96Zr. The...
This Letter reports the successful use of feedback from a spin polarization measurement to revolution frequency $0.97\text{ }\text{ }\mathrm{GeV}/c$ bunched and polarized deuteron beam in Cooler Synchrotron (COSY) storage ring order control both precession rate ($\ensuremath{\approx}121\text{ }\mathrm{kHz}$) phase horizontal component. Real time synchronization with radio (rf) solenoid made possible rotation out plane, yielding demonstration method manipulate polarization. In particular,...
The151Sm(n,gamma)152Sm cross section has been measured at the spallation neutron facility n_TOF CERN in energy range from 1 eV to MeV. The new combines excellent resolution time-of-flight, low repetition rates, and an unsurpassed instantaneous luminosity, resulting rather favorable signal/background ratios. 151Sm is of importance for characterizing capture nucleosynthesis asymptotic giant branch stars. At a thermal kT=30 keV Maxwellian averaged this unstable isotope (t(1/2)=93 yr) was...
The neutron capture cross sections of the Zr isotopes have important implications in nuclear astrophysics and for reactor design. small section magic nucleus $^{90}\mathrm{Zr}$, which accounts more than 50% natural zirconium represents one key stellar $s$-process, because it acts as a bottleneck chain between Fe seed heavier isotopes. same element, Zr, also is an component structural materials used traditional advanced reactors. ($n,\ensuremath{\gamma}$) has been measured at CERN, using...
The ($n,\ensuremath{\gamma}$) reaction of the radioactive isotope ${}^{93}$Zr has been measured at n_TOF high-resolution time-of-flight facility CERN. Resonance parameters have extracted in neutron energy range up to 8 keV, yielding capture widths smaller (14$%$) than reported an earlier experiment. These results are important for detailed nucleosynthesis calculations and refined studies waste transmutation concepts.
The stable spin direction of polarized particles in a storage ring was determined first experimentally, through an accurate measurement the tune and its response to longitudinal magnetic fields.
This work reports on accurate, high-resolution measurements of the $^{25}$Mg($n, \gamma$)$^{26}$Mg and tot$) cross sections in neutron energy range from thermal to about 300 keV, leading a significantly improved parametrization. The relevant resonances for $n+^{25}$Mg were characterized combined R-matrix analysis experimental data. resulted an unambiguous spin/parity assignment corresponding excited states $^{26}$Mg. With this information upper limits reaction rates $^{22}$Ne($\alpha,...
Because the relatively small neutron capture cross sections of zirconium isotopes are difficult to measure, results previous measurements often not adequate for a number problems in astrophysics and nuclear technology. Therefore, $^{92}\mathrm{Zr}$($n,\ensuremath{\gamma}$) section has been remeasured at CERN n_TOF facility, providing set improved parameters 44 resonances energy range up 40 keV. With this information cross-section uncertainties keV region could be reduced $5%$ as required...
The cross section of the $^{62}$Ni($n,\gamma$) reaction was measured with time-of-flight technique at neutron facility n_TOF CERN. Capture kernels 42 resonances were analyzed up to 200~keV energy and Maxwellian averaged sections (MACS) from $kT=5-100$ keV calculated. With a total uncertainty 4.5%, stellar is in excellent agreement KADoNiS compilation $kT=30$ keV, while being systematically lower factor 1.6 higher temperatures. $^{63}$Ni($n,\gamma$) for first time n_TOF. We determined...
The neutron capture cross sections of the Zr isotopes are relevant to studies in nuclear structure, astrophysics, and technology. valence $^{91}\mathrm{Zr}$ with respect magic nucleus $^{90}\mathrm{Zr}$ has interesting implications for statistical analysis proximity shell closures. In stellar nucleosynthesis, important $s$-process reaction flow between Fe seeds heavier isotopes. Because its relatively small ($n,\ensuremath{\gamma}$) sections, represents also an structural material reactors....
The neutron capture cross sections of the Zr isotopes play an important role in nucleosynthesis studies. $s$-process reaction flow between Fe seed and heavier passes through magic nucleus $^{90}\mathrm{Zr}$ $^{91,92,93,94}\mathrm{Zr}$, but only part extends to $^{96}\mathrm{Zr}$ because branching point at $^{95}\mathrm{Zr}$. Apart from their effect on flow, comparably small isotopic ($n,\ensuremath{\gamma}$) make also interesting structural material for nuclear reactors. $^{94}\mathrm{Zr}$...
The 241Am(n,γ) cross section has been measured at the n_TOF facility CERN using deuterated benzene liquid scintillators, commonly known as C6D6 detectors, and time-of-flight spectrometry. results in resolved resonance range bring new constraints to evaluations below 150 eV, energy upper limit was extended from 320 eV with a total of 172 resonances not present current evaluations. thermal capture found be σth=678±68 b, which is good agreement most previous measurements. unresolved region...
Nuclear level densities (NLDs) and $\gamma$-ray strength functions ($\gamma$SFs) have been extracted from particle-$\gamma$ coincidences of the $^{92}$Zr($p,p' \gamma$)$^{92}$Zr $^{92}$Zr($p,d \gamma$)$^{91}$Zr reactions using Oslo method. The new $^{91,92}$Zr $\gamma$SF data, combined with photonuclear cross sections, cover whole energy range $E_{\gamma} \approx 1.5$~MeV up to giant dipole resonance at 17$~MeV. wide-range data display structures 9.5$~MeV, compatible a superposition...
The measurement of the capture cross-section fissile elements, utmost importance for design innovative nuclear reactors and management waste, faces particular difficulties related to $ \gamma$ -ray background generated in competing fission reactions. At CERN neutron time-of-flight facility n_TOF we have combined Total Absorption Calorimeter (TAC) detector with a set three 235U loaded MicroMegas (MGAS) detectors measuring simultaneously two reactions: fission. results presented here include...
The paper describes the commissioning of experimental equipment and machine studies required for first spin-filtering experiment with protons at a beam kinetic energy 49.3 MeV in COSY. implementation low-$\ensuremath{\beta}$ insertion made it possible to achieve lifetimes ${\ensuremath{\tau}}_{b}=8000\text{ }\text{ }\mathrm{s}$ presence dense polarized hydrogen storage-cell target areal density...