A5073893854- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Particle Detector Development and Performance
- Radiation Therapy and Dosimetry
- Nuclear Materials and Properties
- Atomic and Subatomic Physics Research
- Particle physics theoretical and experimental studies
- Astro and Planetary Science
- Medical Imaging Techniques and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- High-Energy Particle Collisions Research
- Astronomical and nuclear sciences
- Experimental and Theoretical Physics Studies
- Gamma-ray bursts and supernovae
- Electron and X-Ray Spectroscopy Techniques
- Quantum and Classical Electrodynamics
- Quantum Chromodynamics and Particle Interactions
- Advanced NMR Techniques and Applications
- Superconducting Materials and Applications
- Advancements in PLL and VCO Technologies
- Electrowetting and Microfluidic Technologies
- Characterization and Applications of Magnetic Nanoparticles
- Quantum Information and Cryptography
University of Zagreb
2015-2024
Universitat de València
2024
Instituto de Física Corpuscular
2024
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2024
European Organization for Nuclear Research
2016-2023
Instituto Superior Técnico
2017-2023
European Commission
2020
Institut za filozofiju
2019
Jagiellonian University
2019
Institute of Physics
2019
In positron annihilation, exploration of the polarization correlations emerging gamma quanta has gained interest, since they offer a possibility to improve signal-to-background in medical imaging using emission tomography. The annihilation quanta, which are predicted be an entangled state, have orthogonal polarizations and this property may exploited discriminate them from two uncorrelated photons contributing background. Recent experimental studies after prior Compton scattering one them,...
A pulse shape analysis framework is described, which was developed for n_TOF-Phase3, the third phase in operation of n_TOF facility at CERN. The most notable feature this new adoption generic routines, characterized by a minimal number explicit assumptions about nature pulses. aim these routines to be applicable wide variety detectors, thus facilitating introduction detectors or types into framework. operational details are suited specific requirements particular adjusting set external input...
The $^{58}$Ni $(n,\gamma)$ cross section has been measured at the neutron time of flight facility n_TOF CERN, in energy range from 27 meV up to 400 keV. In total, 51 resonances have analyzed 122 Maxwellian averaged sections (MACS) calculated for stellar temperatures kT$=$5-100 keV with uncertainties less than 6%, showing fair agreement recent experimental and evaluated data kT = 50 MACS extracted present work 30 is 34.2$\pm$0.6$_\mathrm{stat}\pm$1.8$_\mathrm{sys}$ mb, latest results...
Abstract Neutron-induced fission reactions play a crucial role in variety of fields fundamental and applied nuclear science. In basic physics they provide important information on properties matter, while technology are at the basis present future reactor designs. Finally, there is renewed interest astrophysics due to multi-messenger observation neutron star mergers played by recycling r -process nucleosynthesis. Although studied for several decades, many questions still remain reactions,...
When a positron annihilates, two gamma photons are created with orthogonal polarizations. It is possible to use coincidence measurements where both undergo Compton scattering estimate their initial relative polarization orientation. This information of great interest in imaging systems, such as Positron Emission Tomography, it may be used an additional tool distinguish true events from scatter and random background. The successful utilization this principle critically depends on the...
The integral cross section of the ${}^{12}\mathrm{C}(n,p){}^{12}\mathrm{B}$ reaction has been determined for first time in neutron energy range from threshold to several GeV at n_TOF facility CERN. measurement relies on activation technique with $\ensuremath{\beta}$ decay ${}^{12}\mathrm{B}$ measured over a period four half-lives within same bunch which occurs. results indicate that model predictions, used variety applications, are mostly inadequate. value reported here can be as benchmark...
The aim of this work is to provide a precise and accurate measurement the $^{238}\mathrm{U}$($n,\ensuremath{\gamma}$) reaction cross section in energy region from 1 eV 700 keV. This fundamental importance for design calculations nuclear reactors, governing behavior reactor core. In particular, fast which are experiencing growing interest their ability burn radioactive waste, operate high neutron spectrum. most recent evaluations disagree due inconsistencies existing measurements up 15%....
Background: Nuclear waste management is considered amongst the major challenges in field of nuclear energy. A possible means addressing this issue transmutation advanced systems, whose operation requires a fast neutron spectrum. In regard, accurate knowledge neutron-induced reaction cross sections several (minor) actinide isotopes essential for design optimization and improvement safety margins such systems. One case $^{240}\mathrm{Pu}$, due to its accumulation spent fuel thermal reactors...
High energy ion irradiation is an important tool for nanoscale modification of materials. In the case thin targets and 2D materials, which these energetic ions can pierce through, modifications such as production nanopores open up pathways new applications. However, materials be hindered because subsequent release via electron emission. this work, we follow dissipation after impact in graphite target using Geant4 code. Presented results show that significant amount released from target....
We have assembled and tested a system of 2 detector modules containing Lutetium Fine Silicate scintillator pixels in 4 × matrix, read out by multi-pixel photon counter arrays with the matching element size. The amplified signals were acquired using fast digitizers stored for offline analysis. Using two different approaches, we determined single crystal relative energy resolution at 511 keV to be 14% 12%. coincidence time has been digital constant fraction triggering leading edge method,...
In counting experiments associated with pulsed sources, a high data collection rate can lead to considerably large losses, especially in the case of spallation Time-of-Flight facilities equipped medium and short flight paths where research interest is focused on higher neutron energies losses be quite due flux, more compressed time frame compared one lower cross-section depending reaction. Examples such measurements are induced fission at new experimental area EAR-2 n_TOF facility CERN....
The precision of the charged kaon mass is an order magnitude worse than pion mainly due to two inconsistent measurements. We plan improve this by determining with requested accuracy in measurements X-ray transitions kaonic atoms selected solid targets HPGe detector at DAΦNE Laboratori Nazionali di Frascati, Italy. will be performed parallel SIDDHARTA-2 gaseous targets. status preparation presented.
The paper explores the shadow of repulsive Rutherford scattering - portion space entirely shielded from admitting any particle trajectory. geometric properties projectile are analyzed in detail fixed-target frame as well center-of-mass frame, where both charged and target cast their own respective shadows. In frames is found to take an extremely simple, paraboloidal shape. precisely at focus this shape, while focal points shadows coincide. takes on a universal form, independent underlying...
The n_TOF facility operates at CERN with the aim of addressing request high accuracy nuclear data for advanced energy systems as well astrophysics. Thanks to features neutron beam, important results have been obtained on induced fission and capture cross sections U, Pu minor actinides. Recently construction another beam line has started; new will be complementary first one, allowing further extend experimental program foreseen next measurement campaigns.
Abstract We examine a logical foundation of depicting Lorentz contraction Coulomb field (an electric point charge in uniform motion) by means the ‘Lorentz contracted’ lines. Two existing arguments for lines sound appealing and lead to very simple calculations yielding correct results. However, one them is victim subtle weaknesses, as it relies on ascribing degree physical reality The other correctly proves what sets out prove. But does not provide proof, or even suggestion, an additional...
A detailed model describing the coincidental timing resolution of scintillating fibers is developed for a fully general selection relevant physical distributions. Fiber geometry, rate scintillation decay together with mean number, spatial dispersion and attenuation emitted photons considered. Broadness - achieved by assuming form user provided distributions allows considerations varying complexity to be adopted from simple meridional approximation considerably more refined description...
Elementary particle physics is a fascinating field of modern investigating the basic constituents matter and their interactions.In experiments large accelerators very sophisticated detector systems are usually used.However, it desirable to have simple for undergraduate even secondary school courses which can demonstrate complex investigations in this field.We constructed setup measurement lifetime cosmic muons based on single scintillation detector.Expensive complicated professional...
Abstract In light of a recent direct experimental confirmation Lorentz contraction Coulomb field (an electric point charge in uniform motion), we revisit some common confusions related to it, be mindful teaching the subject. These include questions about radial nature field, role retardation effect due finite speed information transfer and issues depiction by means contracted lines.