A5049185865- Nuclear physics research studies
- Nuclear Physics and Applications
- Quantum Chromodynamics and Particle Interactions
- Atomic and Molecular Physics
- High-Energy Particle Collisions Research
- Nuclear reactor physics and engineering
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Advanced NMR Techniques and Applications
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Rare-earth and actinide compounds
- Astronomical and nuclear sciences
- Particle Accelerators and Free-Electron Lasers
- Dark Matter and Cosmic Phenomena
- Astro and Planetary Science
- Food composition and properties
- Particle accelerators and beam dynamics
- Vaccine Coverage and Hesitancy
- Magnetic confinement fusion research
- Food Industry and Aquatic Biology
- Inorganic Fluorides and Related Compounds
- Quantum, superfluid, helium dynamics
- Diverse Scientific Research Studies
GSI Helmholtz Centre for Heavy Ion Research
2017-2024
Technical University of Darmstadt
2015-2024
Croatian National Bank
2023-2024
Rudjer Boskovic Institute
2024
Kyoto University
2021
Opća Bolnica Zadar
2018
University of Zagreb
2014
Culham Science Centre
2013
Many neutron star properties, such as the proton fraction, reflect symmetry energy contributions to equation of state that dominate when and densities differ strongly. To constrain these at suprasaturation densities, we measure spectra charged pions produced by colliding rare isotope tin (Sn) beams with isotopically enriched Sn targets. Using ratios pion measured high transverse momenta, deduce slope be $42<L<117\text{ }\text{ }\mathrm{MeV}$. This value is slightly lower but consistent $L$...
Subjecting a physical system to extreme conditions is one of the means often used obtain better understanding and deeper insight into its organization structure. In case atomic nucleus, such approach investigate isotopes that have very different neutron-to-proton (N/Z) ratios than in stable nuclei. Light, neutron-rich exhibit most asymmetric N/Z those lying beyond limits binding, which undergo spontaneous neutron emission exist only as short-lived resonances (about 10-21 s), provide...
In the past two decades, pions created in high density regions of heavy ion collisions have been predicted to be sensitive at densities symmetry energy term nuclear equation state, a property that is key our understanding neutron stars. new experiment designed study energy, multiplicities negatively and positively charged measured with accuracy for central 132Sn+124Sn, 112Sn+124Sn, 108Sn+112Sn E/A=270 MeV SπRIT Time Projection Chamber. While individual pion are 4% accuracy, those...
NeuLAND (New Large-Area Neutron Detector) is the next-generation neutron detector for R3B (Reactions with Relativistic Radioactive Beams) experiment at FAIR (Facility Antiproton and Ion Research). detects neutrons energies from 100 to 1000 MeV, featuring a high detection efficiency, spatial time resolution, large multi-neutron reconstruction efficiency. This achieved by highly granular design of organic scintillators: 3000 individual submodules size 5 × 250 cm3 are arranged in 30 double...
Detailed spectroscopy of the neutron-unbound nucleus $^{28}\mathrm{F}$ has been performed for first time following proton/neutron removal from $^{29}\mathrm{Ne}/^{29}\mathrm{F}$ beams at energies around $230\text{ }\text{ }\mathrm{MeV}/\mathrm{nucleon}$. The invariant-mass spectra were reconstructed both $^{27}{\mathrm{F}}^{(*)}+n$ and $^{26}{\mathrm{F}}^{(*)}+2n$ coincidences revealed a series well-defined resonances. A near-threshold state was observed in reactions is identified as ground...
The neutron-rich unbound fluorine isotope ^{30}F_{21} has been observed for the first time by measuring its neutron decay at SAMURAI spectrometer (RIBF, RIKEN) in quasifree proton knockout reaction of ^{31}Ne nuclei 235 MeV/nucleon. mass and thus one-neutron-separation energy ^{30}F determined to be S_{n}=-472±58(stat)±33(sys) keV from measurement invariant-mass spectrum. absence a sharp drop S_{n}(^{30}F) shows that "magic" N=20 shell gap is not restored close ^{28}O, which agreement with...
The isospin characters of low-energy dipole excitations in neutron-rich unstable nucleus 20O were investigated, for the first time nuclei. Two spectra obtained from a dominant isovector probe (O20+Au) and isoscalar (O20+α) compared analyzed by distorted-wave Born approximation to extract independently strengths. known 1− states with large strengths at energies 5.36(5) MeV (11−) 6.84(7) (12−) also excited probe. These two found have different strengths, 2.70(32)% 0.67(12)% (12−),...
Spectroscopic factors of neutron-hole and proton-hole states in $^{131}\mathrm{Sn}$ $^{131}\mathrm{In}$, respectively, were measured using one-nucleon removal reactions from doubly magic $^{132}\mathrm{Sn}$ at relativistic energies. For a 2910(50)-keV $\ensuremath{\gamma}$ ray was observed for the first time tentatively assigned to decay ${5/2}^{\ensuremath{-}}$ state 3275(50) keV known ${1/2}^{\ensuremath{-}}$ level 365 keV. The spectroscopic determined this new excited three other...
Abstract We present the design, prototype developments and test results of new time-of-flight detector (ToFD) which is part R $$^3$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow/> <mml:mn>3</mml:mn> </mml:msup> </mml:math> B experimental setup at GSI FAIR, Darmstadt, Germany. The ToFD able to detect heavy-ion residues all charges relativistic energies with a relative energy precision $$\sigma _{\varDelta E}/{\varDelta E}$$ <mml:mrow> <mml:msub>...
Detailed $\gamma$-ray spectroscopy of the exotic neon isotope $^{28}$Ne has been performed for first time using one-neutron removal reaction from $^{29}$Ne on a liquid hydrogen target at 240~MeV/nucleon. Based an analysis parallel momentum distributions, level scheme with spin-parity assignments constructed and negative-parity states are identified time. The measured partial cross sections distributions reveal significant intruder $p$-wave strength providing evidence breakdown $N=20$ $N=28$...
Properties of the nuclear equation state (EoS) can be probed by measuring dynamical properties nucleus-nucleus collisions. In this study, we present directed flow (v1), elliptic (v2) and stopping (VarXZ) measured in fixed target Sn + collisions at with SπRIT Time Projection Chamber. We perform Bayesian analyses which EoS parameters are varied simultaneously within Improved Quantum Molecular Dynamics-Skyrme (ImQMD-Sky) transport code to obtain a multivariate correlated constraint. The include...
The accuracy of reaction theories used to extract properties exotic nuclei from scattering experiments is often unknown or not quantified, but utmost importance when, e.g., constraining the equation state asymmetric nuclear matter observables as neutron-skin thickness. In order test Glauber multiple-scattering model, total interaction cross section on carbon targets was measured at initial beam energies 400, 550, 650, 800, and 1000 MeV/nucleon. measurements were performed during first...
The nucleus $^{29}$Ne is situated at the border of island inversion. Despite significant efforts, no bound low-lying intruder $f_{7/2}$-state, which would place firmly inside inversion, has yet been observed. Here, first investigation unbound states reported. were populated in $^{30}\mathrm{Ne}(p,pn)$ and $^{30}\mathrm{Na}(p,2p)$ reactions a beam energy around $230$ MeV/nucleon, analyzed terms their resonance properties, partial cross sections momentum distributions. distributions are...
Nuclear collective motion provides valuable constraint on the size of neutron-skin thickness and properties nuclear matter symmetry energy. By employing relativistic energy density functional (RNEDF) covariance analysis related to $\chi^2$ fitting model parameters, relevant observables are identified for dipole excitations, which strongly correlate with $(r_{np})$, at saturation $(J)$ slope $(L)$. Using RNEDF framework experimental data pygmy strength ($^{68}$Ni, $^{132}$Sn, $^{208}$Pb)...
I. Lihtar et al.The Coulomb excitation of 124,128,130,132,134 Sn isotopes in the electric field a Pb target have been studied using R 3 B setup as part FAIR Phase-0 program.The experiment was motivated by possibility nuclear dipole response to infer valuable information on slope symmetry energy equation state.Measurements were performed inverse kinematics at relativistic energies 750 MeV/u and 904 MeV/u.The analysis method preliminary results for decay channel with single outgoing neutron...
The isotopic evolution of the relationship between symmetry energy at saturation density nuclear matter (J), neutron skin thickness (ΔR) and relevant observables related to isovector dipole excitations in rich 116−136Sn isotopes has been investigated framework relativistic functional theory. description employs a family effective interactions with dependent meson-nucleon couplings (DDME) spanning range values J = 30 − 38 MeV.