C. Mazzocchi
A5035620367- Nuclear physics research studies
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Neutrino Physics Research
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
- Radioactive Decay and Measurement Techniques
- Nuclear reactor physics and engineering
- Advanced Chemical Physics Studies
- Advanced NMR Techniques and Applications
- Astro and Planetary Science
- Radiation Detection and Scintillator Technologies
- X-ray Spectroscopy and Fluorescence Analysis
- Mass Spectrometry Techniques and Applications
- Radiation Therapy and Dosimetry
- Particle Detector Development and Performance
- Electron and X-Ray Spectroscopy Techniques
- Scientific Research and Discoveries
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- Inorganic Fluorides and Related Compounds
University of Warsaw
2016-2025
Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
2023-2024
University of Milan
2009-2022
University of Tennessee at Knoxville
2006-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2010-2022
Joint Institute for Computational Sciences
2012-2022
University of Genoa
2021
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2021
Research Association for Combustion Engines
2001-2019
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2017
Recent observations of (6)Li in metal poor stars suggest a large production this isotope during big bang nucleosynthesis (BBN). In standard BBN calculations, the (2)H(α,γ)(6)Li reaction dominates production. This has never been measured inside energy region because its cross section drops exponentially at low and electric dipole transition is strongly suppressed for isoscalar particles (2)H α energies below Coulomb barrier. Indirect measurements using dissociation only give upper limits...
Results of decay spectroscopy on nuclei in vicinity the doubly magic 48Ni are presented. The measurements were performed with a Time Projection Chamber optical readout which records tracks ions and protons gaseous volume. Six decays including four events two-proton ground-state radioactivity recorded. An advanced reconstruction procedure yielded 2p energy for Q2p = 1.29(4) MeV. In addition, spectra \b{eta}-delayed emitted 44Cr 46Fe, as well half-lives branching ratios determined. results...
Two new alpha emitters 109Xe and 105Te were identified through the observation of --> 101Sn alpha-decay chain. The nuclei produced in fusion-evaporation reaction 54Fe(58Ni,3n)109Xe studied using Recoil Mass Spectrometer at Holifield Radioactive Ion Beam Facility. transitions Ealpha = 4062 +/- 7 keV 3918 9 interpreted as l 2 0 from 7/2+ ground state (T1/2 13 ms) to 5/2+ a excited state, located 150 105Te. subsequent decay marks discovery lightest known alpha-decaying nucleus. measured...
The rate of the hydrogen-burning carbon-nitrogen-oxygen (CNO) cycle is controlled by slowest process, 14N(p,γ)15O, which proceeds capture to ground and several excited states in O15. Previous extrapolations for state contribution disagreed a factor 2, corresponding 15% uncertainty total astrophysical S factor. At Laboratory Underground Nuclear Astrophysics (LUNA) 400 kV accelerator placed deep underground Gran Sasso facility Italy, new experiment on has been carried out at 317.8, 334.4,...
The decay of the extremely neutron-deficient $^{48}\mathrm{Ni}$ was studied by means an imaging time-projection chamber, which allowed recording tracks charged particles. decays six atoms were observed. Four them clearly correspond to two-proton radioactivity, providing first direct evidence for this mode in $^{48}\mathrm{Ni}$. Two represent $\ensuremath{\beta}$-delayed proton emission. half-life is determined be ${T}_{1/2}=2.{1}_{\ensuremath{-}0.4}^{+1.4}$ ms.
Proton captures on Mg isotopes play an important role in the Mg–Al cycle active stellar H-burning regions. In particular, low-energy nuclear resonances 25Mg(p, γ)26Al reaction affect production of radioactive 26Algs as well resulting Mg/Al abundance ratio. Reliable estimations these quantities require precise measurements strengths resonances. Based a new experimental study performed at Laboratory for Underground Nuclear Astrophysics, we provide revised rates γ)26Algs and γ)26Alm reactions...
The structure of neutron-rich nuclei beyond $^{78}\mathrm{Ni}$ was studied using postaccelerated radioactive beams $^{83,84,85}\mathrm{Ga}$ utilizing $\ensuremath{\beta} \ensuremath{\gamma}$ and $\ensuremath{\beta}\ensuremath{-}n spectroscopy. Our data, when combined with energy level systematics, suggests a possible new spherical subshell closure at $N=58$ is created by the nearly degenerated $\ensuremath{\nu}3{s}_{1/2}$ $\ensuremath{\nu}2{d}_{5/2}$ orbitals being well separated from other...
The β decays of neutron-rich nuclei near the doubly magic (78)Ni were studied at Holifield Radioactive Ion Beam Facility using an electromagnetic isobar separator. half-lives (82)Zn (228±10 ms), (83)Zn (117±20 and (85)Ga (93±7 ms) determined for first time. These found to be very different from predictions global model used in astrophysical simulations. A new calculation was developed density functional model, which properly reproduced experimental values. robustness region allowed us...
In the EXILL campaign a highly efficient array of high purity germanium (HPGe) detectors was operated at cold neutron beam facility PF1B Institut Laue-Langevin (ILL) to carry out nuclear structure studies, via measurements γ-rays following neutron-induced capture and fission reactions. The setup consisted collimation system producing pencil with thermal equivalent flux about 108 n s−1cm−2 target position negligible halo. surrounded by an eight ten anti-Compton shielded EXOGAM Clover...
Previously unknown isotopes 30Ar and 29Cl have been identified by measurement of the trajectories their in-flight decay products 28S+p+p 28S+p, respectively. The analysis angular correlations fragments provided information on energies structure parent states. ground states were found at 2.25+0.15−0.10 1.8±0.1 MeV above two- one-proton thresholds, lowest in point to a violation isobaric symmetry these unbound nuclei. two-proton has transition region between simultaneous sequential proton...
Abstract During the 15th and into mid‐16th centuries, tin‐glazed terracotta sculptures were celebrated for their luminous colours, perceived durability, technical ingenuity of novel medium. Although in high demand, supply these pieces was restricted because secrecy recipes used by pioneers technique on Italian peninsula, namely Della Robbia family. As workshop procedures did not come down to us a written form, art historical scholarship has focused retrieving original through scientific...
A new cluster decay process is proposed for the intermediate mass fragments (IMFs) observed in low energy ${}^{58}\mathrm{Ni}{+}^{58}{\stackrel{\ensuremath{\rightarrow}}{\mathrm{Ni}}}^{116}{\mathrm{Ba}}^{*}$ reaction. The IMFs arise as multiple ``clusters'' of masses less than $\ensuremath{\sim}20,$ having their origin macroscopic liquid drop energy. $\ensuremath{\alpha}$ nuclei, particular ${}^{12}\mathrm{C}$ (or complementary ${}^{104}\mathrm{Sn}),$ are predicted to be most probable decays...
The beta-delayed neutron branching ratios (P{betan}) for nuclei near doubly magic 78Ni have been directly measured using a new method combining high-resolution mass separation, reacceleration, and digital beta-gamma spectroscopy of 238U fission products. P{betan} values the very neutron-rich isotopes ;{76-78}Cu 83Ga were found to be much higher than previously reported predicted. Revised calculations betan process, accounting measurements an inversion pi2p{3/2} pi1f{5/2} orbitals, are in...
An alpha-decay branch of (1.4+/-0.4) x 10(-4) has been discovered in the decay 109I, which predominantly decays via proton emission. The measured Q(alpha) value 3918+/-21 keV allows indirect determination Q for emission from 105Sb 356+/-22 keV, is approximately 130 more bound than previously reported. This result relevant astrophysical rapid proton-capture process, would terminate 105Sn(p,gamma)106Sb(p,gamma)107Te(alpha decay)103Sn cycle at densities expected explosive hydrogen burning...
Fine structure in proton emission from the 7/2−[523] ground state and 1/2+[411] isomer deformed nucleus 141Ho was studied by means of fusion-evaporation reactions digital signal processing. Proton transitions to first excited 2+ 140Dy, with branching ratio Ipgs(2+)=0.9±0.2% Ipm(2+)=1.7±0.5%, were observed. The data are analyzed within non-adiabatic weak coupling model assuming a large quadrupole deformation daughter 140Dy as predicted self-consistent theory. Implications this result on...
Proton captures on Mg isotopes play an important role in the Mg-Al cycle active stellar H shell burning. In particular, strengths of low-energy resonances with E < 200 keV 25Mg(p,gamma)26Al determine production 26Al and a precise knowledge these nuclear data is highly desirable. Absolute measurements at such low-energies are often very difficult hampered by gamma-ray background as well changing target stoichiometry during measurements. The latter problem can be partly avoided using higher...