A5071403788- Nuclear physics research studies
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Nuclear Physics and Applications
- Quantum Chromodynamics and Particle Interactions
- Nuclear reactor physics and engineering
- Radiopharmaceutical Chemistry and Applications
- Radiation Therapy and Dosimetry
- Boron Compounds in Chemistry
- Particle accelerators and beam dynamics
- Quantum, superfluid, helium dynamics
- Advanced Chemical Physics Studies
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Chemical Reactions and Isotopes
- Astro and Planetary Science
- Advanced NMR Techniques and Applications
- Medical Imaging Techniques and Applications
- Nuclear Materials and Properties
- High-pressure geophysics and materials
- Scientific Computing and Data Management
- Muon and positron interactions and applications
- Superconducting Materials and Applications
- Rare-earth and actinide compounds
University of Warsaw
2015-2024
European Central Bank
2024
Universidade de Santiago de Compostela
2009-2020
European Organization for Nuclear Research
2004-2015
V. N. Karazin Kharkiv National University
2010
Institute of Nuclear Physics, Polish Academy of Sciences
2010
National Centre for Nuclear Research
2010
University of Silesia in Katowice
2010
Laboratoire de Physique des deux infinis Bordeaux
2009
Yale University
2009
The differences between neutron and proton density distributions at large nuclear radii in stable nuclei were determined. Two experimental methods applied: spectroscopy analysis of the antiproton annihilation residues one mass unit lighter than target measurements strong-interaction effects on antiprotonic x rays. Assuming validity two-parameter Fermi these radii, conclusions are that two experiments consistent with each other for rich it is mostly diffuseness which increases not...
The x-ray cascade from antiprotonic atoms was studied for $^{208}\mathrm{Pb}$ and $^{209}\mathrm{Bi}$. Widths shifts of the levels due to strong interaction were determined. Using modern antiproton-nucleus optical potentials, neutron densities in nuclear periphery deduced. Assuming two-parameter Fermi distributions (2pF) describing proton densities, rms radii deduced both nuclei. difference $\ensuremath{\Delta}{r}_{\mathit{np}}$ equal...
The internal α-particle beam of the Warsaw Heavy Ion Cyclotron was used to produce research quantities medically interesting Sc radioisotopes from natural Ca and K isotopically enriched 42Ca targets. targets were made metallic calcium, calcium carbonate potassium chloride. New data on production yields impurities generated during target irradiations are presented for positron emitters 43Sc, 44gSc 44mSc. different paths long lived 44mSc/44gSc in vivo generator, proposed by ARRONAX team, using...
The relationship between the nucleon density at large radii and value of rms radius is investigated in framework Skyrme Hartree-Fock relativistic mean-field models. From a comparison to charge we constrain models terms nuclear matter incompressibility effective mass properties required reproduce shape. results are used extract neutron for $^{208}\mathrm{Pb}$ from antiprotonic atom data. result difference proton radii, so-called neutron-skin thickness,...
The nuclear periphery was studied by using antiprotons. Two experimental methods were applied: analysis of the antiproton annihilation residues one mass unit lighter than target spectroscopy and measurement strong interaction effects on antiprotonic level widths shifts. 26 isotopes from a wide range numbers (40<A<238) investigated. gathered antiprotonic-atom data compared with results obtained hadron scattering some expectations theoretical approaches.
Recently, significant interest in (44)Sc as a tracer for positron emission tomography (PET) imaging has been observed. Unfortunately, the co-emission by of high-energy γ rays (E = 1157, 1499 keV) causes dangerous increase radiation dose to patients and clinical staff. However, it is possible produce another radionuclide scandium-(43)Sc-having properties similar but characterized much lower energy concurrent gamma emissions. This work presents production route (43)Sc α irradiation natural...
The quasielastic barrier distribution (${D}_{\mathrm{qe}}$) of the $^{20}\mathrm{Ne} +^{208}\mathrm{Pb}$ system exhibits a single broad structureless peak, unlike results coupled-channels calculations, including strongest collective states both projectile and target, which show pronounced double-peaked structure. Separate measurements transfer strength, combined with relatively small number weak noncollective in $^{208}\mathrm{Pb}$, suggested that observed smoothing this could be due to...
A campaign of Coulomb-excitation experiments to study the electromagnetic structure \(^{110}\)Cd was performed using beams \(^{14}\)N, \(^{32}\)S, and \(^{60}\)Ni. The use various reaction partners enables disentangling contributions individual matrix elements involved in excitation process, yielding, among others, a precise determination lifetime 2\(^+_2\) state \(^{110}\)Cd. Abstract Published by Jagiellonian University 2025 authors
Heavy-ion fusion reactions are essential to investigate the fundamental problem of quantum tunnelling many-body systems in presence intrinsic degrees freedom. Studying light with Q > 0 and possibly identifying hindrance phenomenon, requires challenging measurements. Investigating slightly heavier cases allows a reliable extrapolation towards lighter astrophysical systems. We measured excitation function 12 C + 28 Si down hundreds nanobarns, using beams from XTU Tandem accelerator LNL. The...
We present the review of last studies concerning interpretation barrier distributions. In some cases, dissipation strongly influences shape quasielastic and fusion distributions, smoothing their structure caused by collective excitations. instances due to non-collective excitations relatively weak transfers, CCRMT model works reasonably well. cases where is rather transfer channels, one should take into account strong dependence couplings on Q-value
A new method to study the nuclear periphery using antiproton annihilation was applied nine isotopes with mass numbers between 58 and 238. The makes use of detection radioactive products one unit lower in number than target. clear neutron halo effect, strongly correlated binding energy, observed some nuclei. experimental results are qualitative agreement calculations proton densities at based on either a simple asymptotic density model or more complex Hartree-Fock approach.
Heavy-ion collisions often produce fusion barrier distributions with structures displaying a fingerprint of couplings to highly collective excitations. Similar can be obtained from large-angle quasielastic scattering, although in this case, the role many weak direct-reaction channels is unclear. For $^{20}\mathrm{Ne}+^{90}\mathrm{Zr}$, we have observed expected for deformed neon projectile; however, $^{20}\mathrm{Ne}+^{92}\mathrm{Zr}$, find significant extra absorption into large number...
Thirteen targets with mass numbers from 58 to 238 were irradiated the antiproton beam Low Energy Antiproton Ring facility at CERN leading formation of antiprotonic atoms these heavy elements. The capture end an atomic cascade results in production more or less excited residual nuclei. selected criterion that both reaction products one nucleon than proton and neutron number target be radioactive. yield radioactive after stopped-antiproton annihilation was determined using gamma-ray...
We present simultaneously measured barrier distributions for the ${}^{20}$Ne $+$ ${}^{208}$Pb system derived from large-angle quasielastic scattering and fusion, in latter case by means of detection fission fragments. Both turned out to be smooth, spectacular disagreement with results standard coupled-channels calculations. Namely, they do not posses strong structure expected calculations, even if apparently take into account explicitly all relevant couplings. This points importance weak...
Proton elastic scattering angular distributions for the reaction ${}^{17}\mathrm{F}+p$, were measured in inverse kinematics over a wide range (${\ensuremath{\theta}}_{\mathrm{c}.\mathrm{m}.}={50}^{\ensuremath{\circ}}$--160${}^{\ensuremath{\circ}}$) at two near-barrier energies of 3.5 and 4.3 MeV/u. The optical potential was probed phenomenological microscopic approach. Moreover, total cross-sections also determined via analysis used as signature probing possible halo structure this...
The internal alpha particle beam of the heavy ion cyclotron operated by Heavy Ion Laboratory (HIL) University Warsaw has a maximum energy 32 MeV and currently an intensity up to 1 pµA.This is used HIL-University Silesia collaboration for production research quantities 211 At, 72 Se/ As 43,44 Sc radioisotopes.The produced activities are transported Institute Nuclear Chemistry Technology in where on therapeutic imaging radiopharmaceuticals based these radioisotopes pursued.
Influence of couplings to collective excitations on fusion process has been well established experimentally and theoretically. Much less is known about the influence dissipation caused by transfer reactions, even due noncollective excitations. In this paper, we report results comparison experimental barrier distributions with $\mathrm{CC}+\mathrm{RMT}$ model calculations taking into account excitations, in which stationary coupled channels method merged a statistical approach based random...
The neutron-to-proton density ratio at the nuclear periphery was determined for six targets from yield of nuclei with mass ${(A}_{t}\ensuremath{-}1)$ generated by antiproton annihilation on number ${A}_{t}.$ A new setup allowed us to measure this half-lives down 6 s. experiment confirmed negative correlation between peripheral and neutron binding energy, which had been previously found. Results Hartree-Fock-Bogoliubov relativistic Hartree-Bogoliubov calculations show good agreement a large...
The droplet model theory of the difference between rms radii neutron and proton distributions in nuclei is compared with measurements obtained aid antiprotonic atoms.Received 30 November 2004DOI:https://doi.org/10.1103/PhysRevC.71.047301©2005 American Physical Society
The recent and older level shifts widths in $\overline{p}$ atoms are analyzed. results fitted by an antiproton-nucleus optical potential with two basic complex strength parameters. These parameters related to average $S$ $P$ wave-scattering the subthreshold energy region. A fair consistency of x-ray data for all $Z$ values, stopping data, $\overline{N}N$-scattering has been achieved. determination neutron density profiles at nuclear surface is undertaken, ${R}_{\mathrm{rms}}$ radii...