P. Chudoba
A5018944690- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Nuclear physics research studies
- Boron Compounds in Chemistry
- Nuclear Materials and Properties
- Radiation Detection and Scintillator Technologies
- Fusion materials and technologies
- Particle Detector Development and Performance
- Radiation Therapy and Dosimetry
- Musicians’ Health and Performance
- Musicology and Musical Analysis
- Superconducting Materials and Applications
- Diverse Musicological Studies
- Radiopharmaceutical Chemistry and Applications
- Education, Psychology, and Social Research
- Medical Imaging Techniques and Applications
- Magnetic confinement fusion research
- Field-Flow Fractionation Techniques
- Cardiac, Anesthesia and Surgical Outcomes
Czech Academy of Sciences, Nuclear Physics Institute
2014-2024
Charles University
2014-2019
Czech Technical University in Prague
2015-2017
Brno University of Technology
2017
National Centre for Nuclear Research
2015
Joint Institute for Nuclear Research
2015
The global polarization of {\Lambda} hyperons along the total orbital angular momentum a relativistic heavy-ion collision is presented based on high statistics data samples collected in Au+Au collisions at \sqrt{s_{NN}} = 2.4 GeV and Ag+Ag 2.55 with High-Acceptance Di-Electron Spectrometer (HADES) GSI, Darmstadt. This first measurement below strangeness production threshold nucleon-nucleon collisions. Results are reported as function centrality well hyperon transverse (p_T) rapidity (y_{CM})...
We present the first observation of K^{-} and ϕ absorption within nuclear matter by means π^{-}-induced reactions on C W targets at an incident beam momentum 1.7 GeV/c studied with HADES SIS18/GSI. The double ratio (K^{-}/K^{+})_{W}/(K^{-}/K^{+})_{C} is found to be 0.319±0.009(stat)_{-0.012}^{+0.014}(syst) indicating a larger in heavier as compared lighter ones. measured ϕ/K^{-} ratios π^{-}+C π^{-}+W acceptance are equal 0.55±0.04(stat)_{-0.07}^{+0.06}(syst)...
A feasibility study has been performed in order to investigate the performance of HADES detector measure electromagnetic decays hyperon resonances $\Sigma(1385)^0$, $\Lambda(1405)$ and $\Lambda{\Lambda}(1520)$ as well production double strange baryon systems $\Xi^-$ $\Lambda\Lambda$ p+p reactions at a beam kinetic energy 4.5 GeV. The existing will be upgraded by new Forward Detector, which extends acceptance into range polar angles that plays crucial role for these investigations. analysis...
Pion-induced reactions provide unique opportunities for an unambiguous description of baryonic resonances and their coupling channels by means a partial-wave analysis. Using the secondary pion beam at SIS18, two-pion production in second resonance region has been investigated to unravel role $N(1520){\frac{3}{2}}^{\ensuremath{-}}$resonance intermediate $\ensuremath{\rho}$-meson production. Results on exclusive with one (${\ensuremath{\pi}}^{\ensuremath{-}}p$) two pions...
Neutron activation and gamma spectrometry are usable also for the determination of cross-sections different neutron reactions. We have studied cross-section yttrium (n,xn) threshold reactions using quasi mono-energetic source based on reaction 7Li target at Nuclear Physics Institute ASCR in Rez. Yttrium suitable candidates fast field measurement by detectors. Fast monitoring is necessary already today a wide range accelerator facilities will gain importance future reactors generation IV,...
The HADES collaboration uses the e + − production as a probe of resonance matter produced in collisions at incident energies 1-3.5 GeV/nucleon GSI. Elementary reactions provide useful references for these studies and give information on Dalitz decays (R→Ne ). Such processes are sensitive to structure time-like electromagnetic baryon transitions kinematic range where (off-shell) vector mesons play crucial role. Results obtained proton-proton commissioning pion-beam experiment reported...
The paper describes cross-section measurements consisting of neutron activation using a 7Li(p,n) quasi mono-energetic source and gamma-ray spectrometry performed at the Nuclear Physics Institute Czech Academy Sciences in Řež, Republic. analysis excitation functions neutron-induced threshold reactions for energy range from 17 up to 34 MeV is presented. cross sections population both ground isomeric states were measured yttrium gold. A comprehensive comparison with earlier experimental data...
The cross-sections of relativistic deuteron reactions on natural copper were studied by the means activation method. beams produced JINR Nuclotron (Russia) with energies from 1 GeV up to 8 used. Lack such prevents usage foils for beam integral monitoring. monitors will help us improve determination during ADS studies. yttrium samples are very suitable detectors monitoring neutron fields not only in But experimental cross-section data higher energy threshold still missing. This situation is...
Radiative transition of an excited baryon to a nucleon with emission virtual massive photon converting dielectron pair (Dalitz decays) provides important information about baryon-photon coupling at low q 2 in timelike region. A prominent enhancement the respective electromagnetic Form Factors (etFF) near vector mesons ρ/ω poles has been predicted by various calculations reflecting strong baryon-vector meson couplings. The understanding these couplings is also primary importance for...
A series of experiments devoted to studies neutron cross-sections by activation method was carried out. The various threshold reactions were studied means different quasi-monoenergetic sources with energies from 14 MeV up 100 MeV. Threshold in materials are among other used measure fast fields produced during accelerator driven system studies. For this reason our measurements crucial. At present, neither experimental nor evaluated data above 30 available for Au, I and In published...
Improvements of the Monte Carlo transport codes and cross-section libraries are very important steps towards usage accelerator-driven transmutation systems. We have conducted a lot benchmark experiments with different set-ups consisting lead, natural uranium moderator irradiated by relativistic protons deuterons within framework collaboration "Energy Transmutation Radioactive Waste". Unfortunately, knowledge total or partial cross-sections reactions is insufficient. Due to this reason we...
The accelerator-Driven-System (ADS) is very important to study the neutron field and radionuclide production inside simple-geometry uranium subcritical setups irradiated with high energy particle beams. A setup QUINTA was 660-MeV proton beam from Phasotron accelerator at Joint Institute for Nuclear Research (JINR). in region along axis investigated by activation technique. aim compare (n,x) (p,x) reactions using detectors of 59 Co nat Pb, experimental results calculated Monte Carlo...
Abstract HADES is a large acceptance spectrometer operating at SIS18, GSI, Germany. It aimed exploration of QCD phase diagram the ion beam energies 1-2 AGeV in region high baryonic densities. The new segmented electromagnetic calorimeter (ECal) was built to extend experimental opportunities detector. will allow study reaction channels involving production neutral mesons and neu-tral resonances elementary heavy-ion reactions via detection their two photon decay. An additional advantage such...
Abstract HADES is a high acceptance di-electron spectrometer operating at SIS18, GSI, Germany aimed study of hadron-proton, hadron-nucleus and nucleus-nucleus collisions 1-4 AGeV beam energies. The new electromagnetic calorimeter (ECal) was added to the experimental setup in order measure γ -quanta thus extend its capabilities π 0 -, η -mesons, production neutral hyperons improve electron-to-hadron separation for partcles with momenta p > 300 MeV/c. first data taking ECal detector carried...
The Nuclotron-base Ion Collider fAcility (NICA) is under construction at the Joint Institute for Nuclear Research (JINR), with commissioning of facility expected in late 2022. Multi-Purpose Detector (MPD) has been designed to operate NICA and its components are currently production. detector be ready data taking first beams from NICA. This document provides an overview landscape investigation QCD phase diagram region maximum baryonic density, where MPD will able provide significant unique...
In March 2019 the HADES experiment recorded 14 billion Ag+Ag collisions at √ s NN = 2.55 GeV as a part of FAIR phase-0 physics program. this contribution, we present and investigate our capabilities to reconstruct analyze weakly decaying strange hadrons hypernuclei emerging from these collisions. The focus is put on measuring mean lifetimes particles.