A5091053898- Nuclear physics research studies
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Quantum Chromodynamics and Particle Interactions
- Astronomical and nuclear sciences
- Advanced NMR Techniques and Applications
- Advanced Chemical Physics Studies
- Quantum, superfluid, helium dynamics
- Radiation Detection and Scintillator Technologies
- Nuclear reactor physics and engineering
- Quantum chaos and dynamical systems
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Cold Atom Physics and Bose-Einstein Condensates
- Particle physics theoretical and experimental studies
- Particle accelerators and beam dynamics
- Astro and Planetary Science
- X-ray Spectroscopy and Fluorescence Analysis
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Superconducting Materials and Applications
- Rare-earth and actinide compounds
- Molecular Spectroscopy and Structure
- Scientific Research and Discoveries
- Medical Imaging Techniques and Applications
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2015-2024
University of Milan
2015-2024
Saha Institute of Nuclear Physics
2024
Banaras Hindu University
2024
Indian Institute of Technology BHU
2024
Istituto Nazionale di Fisica Nucleare
1996-2023
Institut de Recherche sur les Lois Fondamentales de l'Univers
2023
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2007-2023
CEA Paris-Saclay
2007-2023
Pandora (United States)
2022
The Advanced GAmma Tracking Array (AGATA) is a European project to develop and operate the next generation gamma-ray spectrometer. AGATA based on technique of energy tracking in electrically segmented high-purity germanium crystals. This requires accurate determination energy, time position every interaction as gamma ray deposits its within detector volume. Reconstruction full path results with very high efficiency excellent spectral response. realization result many technical advances....
Correlations between the behavior of nuclear symmetry energy, neutron skins, and percentage energy-weighted sum rule (EWSR) exhausted by pygmy dipole resonance (PDR) in $^{68}\mathrm{Ni}$ $^{132}\mathrm{Sn}$ are investigated using different random phase approximation (RPA) models for response, based on a representative set Skyrme effective forces plus meson-exchange Lagrangians. A comparison with experimental data has allowed us to constrain value derivative energy at saturation. The skin...
The nucleus ${}^{163}\mathrm{Lu}$ has been populated through the fusion-evaporation reaction ${}^{139}\mathrm{La}{(}^{29}\mathrm{Si},5n{)}^{163}\mathrm{Lu}$ with a beam energy of 152 MeV. electromagnetic properties several connecting transitions between two presumably triaxial, strongly deformed (TSD) bands have studied. Evidence is presented for assignment excited TSD band as wobbling mode built on yrast band, based comparisons to new calculations in which an aligned particle coupled...
The gamma decay from Coulomb excitation of 68Ni at 600 MeV/nucleon on a Au target was measured using the RISING setup fragment separator GSI. beam produced by fragmentation reaction 86Kr 900 9Be and selected separator. rays were with HPGe detectors forward angles BaF2 scintillators backward angles. spectra show peak centered approximately 11 MeV, whose intensity can be explained in terms an enhanced strength dipole response function (pygmy resonance). Such pygmy structure has been predicted...
In-beam γ-ray spectroscopy using fragmentation reactions of both stable and radioactive beams has been performed in order to study the structure excited states neutron-rich oxygen isotopes with masses ranging from A=20 24. For produced fragments, energies, intensities, γ−γ coincidences have measured. Based on this information new level schemes are proposed for O21,22 up neutron separation energy. The nonobservation any γ-decay branch O23 O24 suggests that their lie above decay thresholds....
The β-decay half-lives of 38 neutron-rich isotopes from (36)Kr to (43)Tc have been measured; the (100)Kr, (103-105)Sr, (106-108)Y, (108-110)Zr, (111,112)Nb, (112-115)Mo, and (116,117)Tc are reported here. results when compared with previous standard models indicate an overestimation in predicted by a factor 2 or more A≈110 region. A revised model based on second generation gross theory β decay better predicts measured suggests rapid flow neutron-capture process (r-matter flow) through this...
This review paper concerns the research devoted to study of properties dipole excitations in nuclei. The main focus is on questions related isospin effects these types excitations. Particular attention given experimental and theoretical efforts made understand nature specific structure low-lying states known as Pygmy Dipole Resonance (PDR). methods employed PDR are reviewed well most interesting aspects. features experiments models reported with special emphasis reaction cross sections...
The nucleus 163Lu has been populated through the reaction 139La(29Si,5n) with a beam energy of 157 MeV. Three triaxial, strongly deformed (TSD) bands have observed very similar rotational properties. first excited TSD band earlier assigned as one-phonon wobbling excitation built on lowest-lying (yrast) band. large B(E2)(out)/B(E2)(in) value obtainable for one four transitions between second and is in good agreement particle-rotor calculations two-phonon excitation.
The \ensuremath{\gamma}-ray spectrum in the giant dipole resonance (GDR) region associated with reaction $^{40}$Ar${+}^{70}$Ge at 10 MeV/nucleon has been measured coincidence residues of heavy composite systems whose excitation energy was ${E}^{\mathrm{*}}$=230 MeV. From statistical-model analysis, it is deduced that GDR strength consistent 100% energy-weighted sum rule, 16\ifmmode\pm\else\textpm\fi{}1 MeV while width ${13}_{\mathrm{\ensuremath{-}}2}^{+1}$ This value not very different from...
The $\gamma$-ray strength function of $^{56}$Fe has been measured from proton-$\gamma$ coincidences for excitation energies up to $\approx 11$ MeV. low-energy enhancement in the function, which was first discovered ($^3$He,$\alpha\gamma$)$^{56}$Fe reaction, is confirmed with ($p,p^\prime\gamma$)$^{56}$Fe experiment reported here. Angular distributions $\gamma$ rays give time evidence that dominated by dipole transitions.
Background: Multinucleon transfer reactions (MNT) are a competitive tool to populate exotic neutron-rich nuclei in wide region of nuclei, where other production methods have severe limitations or cannot be used at all.Purpose: Experimental information on the yields MNT comparison with theoretical calculations necessary make predictions for heavy nuclei.It is crucial determine fraction reaction products which surviving neutron emission fission high excitation energy after nucleon...
At present, magnetic confinement fusion devices rely solely on absolute neutron counting as a direct way of measuring power. Absolute deuterium-tritium gamma rays could provide the secondary neutron-independent technique required for validation scientific results and licensing tool future power plants. However, this approach necessitates an accurate determination gamma-ray-to-neutron branching ratio. The ratio reaction ^{3}H(^{2}H,γ)^{5}He/^{3}H(^{2}H,n)^{4}He was determined in plasmas at...
The spectral 𝛾 ray emission from the reaction 3H(2H,𝛾)5He has been measured for first time in a magnetic confinement deuterium-tritium plasma experiment at Joint European Torus. A custom developed gamma spectrometer system based on LaBr3 scintillator combined to LiH neutron attenuator and zero dead fast digital data acquisition allowed measure weak under ≈105 more intense 14MeV field. 𝑅-matrix analysis of 5He nucleus used predict expected spectrum which compared with measurement, but...
The strength function and the angular distribution of high energy \ensuremath{\gamma} rays emitted by giant dipole resonance (GDR) in hot rotating ${}^{109,110}$Sn nuclei have been measured at temperature $T\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8\mathrm{MeV}$ four values momentum $I$. GDR width is $\ensuremath{\approx}2$ times larger than $T\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0$ increases $\ensuremath{\approx}20%$ as $I$ goes from 40 to $54\ensuremath{\Elzxh}$....
The low-lying states in ¹⁰⁶Zr and ¹⁰⁸Zr have been investigated by means of β-γ isomer spectroscopy at the radioactive isotope beam factory (RIBF), respectively. A new with a half-life 620 ± 150 ns has identified ¹⁰⁸Zr. For sequence even-even Zr isotopes, excitation energies first 2⁺ reach minimum N = 64 gradually increase as neutron number increases up to 68, suggesting deformed subshell closure 64. ground state indicates that spherical gap predicted 70 is not large enough change shape....