A5100651843- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Nuclear physics research studies
- Muon and positron interactions and applications
- Atomic and Molecular Physics
- Nuclear reactor physics and engineering
- Radiation Therapy and Dosimetry
- Particle Detector Development and Performance
- Astronomical and nuclear sciences
- Advanced MRI Techniques and Applications
- Radiopharmaceutical Chemistry and Applications
- Advanced X-ray and CT Imaging
- Quantum Chromodynamics and Particle Interactions
- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Advanced Radiotherapy Techniques
- Electrical Contact Performance and Analysis
- Particle Accelerators and Free-Electron Lasers
- Esophageal and GI Pathology
- Particle accelerators and beam dynamics
- Metal and Thin Film Mechanics
- Metal Alloys Wear and Properties
- Ammonia Synthesis and Nitrogen Reduction
Jagiellonian University
2016-2025
Institute of Physics
2014-2025
Theranostics (New Zealand)
2024
Era's Lucknow Medical College and Hospital
2024
Arizona State University
2023
Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And Applications
2022
Raja Ramanna Centre for Advanced Technology
2022
University of Warsaw
2022
National Centre for Nuclear Research
2021
Institute of Medical Sciences
2020
A detection system of the conventional PET tomograph is set-up to record data from e+ e- annihilation into two photons with energy 511 keV, and it gives information on density distribution a radiopharmaceutical in body object. In this paper we explore possibility performing three gamma imaging based ortho-positronium annihilation, as well positronium mean lifetime J-PET constructed plastic scintillators. For purposes simulations formation its were performed taking account distributions...
The Jagiellonian Positron Emission Tomograph (J-PET) is the first PET built from plastic scintillators.J-PET prototype consists of 192 detection modules arranged axially in three layers forming a cylindrical diagnostic chamber with inner diameter 85 cm and axial field-of-view 50 cm.An arrangement long strips scintillators, their small light attenuation, superior timing properties, relative ease increase opens promising perspectives for cost effective construction whole-body scanner, as well...
Positronium created in a human body during PET scans hallmarks neoplastic tissues.
The novel whole-body PET system based on plastic scintillators is developed by the {J-PET} Collaboration. It consists of scintillator strips arranged axially in form a cylinder, allowing cost-effective construction total-body PET. In order to determine properties scanner prototype and optimize its geometry, advanced computer simulations using GATE software were performed. spatial resolution, sensitivity, scatter fraction noise equivalent count rate estimated according NEMA norm as function...
Charged lepton system symmetry under combined charge, parity, and time-reversal transformation (CPT) remains scarcely tested. Despite stringent quantum-electrodynamic limits, discrepancies in predictions for the electron-positron bound state (positronium atom) motivate further investigation, including fundamental tests. While CPT noninvariance effects could be manifested non-vanishing angular correlations between final-state photons spin of annihilating positronium, measurements were...
The purpose of the presented research is estimation performance characteristics economic Total-Body Jagiellonian-PET system (TB-J-PET) constructed from plastic scintillators. are estimated according to NEMA NU-2-2018 standards utilizing GATE package. simulated detector consists 24 modules, each built out 32 scintillator strips (each with cross section 6 mm times 30 and length 140 cm or 200 cm) arranged in two layers regular 24-sided polygon circumscribing a circle diameter 78.6 cm. For...
Positronium is abundantly produced within the molecular voids of a patient’s body during positron emission tomography (PET). Its properties dynamically respond to submolecular architecture tissue and partial pressure oxygen. Current PET systems record only two annihilation photons cannot provide information about positronium lifetime. This study presents in vivo images lifetime human, for patient with glioblastoma brain tumor, by using dedicated Jagiellonian system enabling simultaneous...
Discrete symmetries play an important role in particle physics with violation of CP connected to the matter-antimatter imbalance Universe. We report most precise test P, T and invariance decays ortho-positronium, performed methodology involving polarization photons from these decays. Positronium, simplest bound state electron positron, is recent interest discrepancies reported between measured hyperfine energy structure theory at level $10^{-4}$ signaling a need for better understanding...
A novel approach to tomographic data processing has been developed and evaluated using the Jagiellonian PET (J-PET) scanner as an example. We propose a system in which there is no need for powerful, local facility, capable reconstruct images on fly. Instead we introduce Field Programmable Gate Array (FPGA) System-on-Chip (SoC) platform connected directly streams coming from scanner, can perform event building, filtering, coincidence search Region-Of-Response (ROR) reconstruction by...
In living organisms, the positron-electron annihilation (occurring during PET imaging) proceeds in about 30% via creation of a metastable ortho-positronium atom. tissue, due to pick-off and conversion processes, over 98% ortho-positronia annihilate into two 511 keV photons. this article, we assess feasibility for reconstruction mean lifetime image based on annihilations The main objectives work include (i) estimation sensitivity total-body scanners imaging using 2γ (ii) spatial time...
The complete and incomplete fusion cross sections for $^{9}\mathrm{Be}+^{124}\mathrm{Sn}$ reaction have been deduced using the online $\ensuremath{\gamma}$-ray measurement technique. Complete at energies above Coulomb barrier was found to be suppressed by $~28%$ compared coupled-channels calculations is in agreement with systematics of L. R. Gasques et al. [Phys. Rev. C 79, 034605 (2009)]. Study projectile dependence on a $^{124}\mathrm{Sn}$ target shows that, $^{9}\mathrm{Be}$ nuclei,...
Complete fusion cross sections have been measured using the off-line $\ensuremath{\gamma}$-ray spectroscopy method for ${}^{6}$Li+${}^{90}$Zr system around barrier energies. Statistical and coupled-channel calculations performed to investigate effect of coupling on complete fusion. It is observed that suppressed by 34 $\ifmmode\pm\else\textpm\fi{}$ 8$%$ compared coupled channel predictions. The breakup estimated continuum discretized channels (CDCC) it found reduce probability. Contrary...
J-PET is a detector optimized for registration of photons from the electron-positron annihilation via plastic scintillators where interact predominantly Compton scattering. Registration both primary and scattered enables to determinate linear polarization photon on event by basis with certain probability. Here we present quantitative results feasibility such measurements decay positronium explore physical limitations resolution determination 511 keV For scattering angles about 82 ∘ (where...
Complete fusion cross sections for ${}^{7}$Li+${}^{144,152}$Sm reactions have been measured at energies around the Coulomb barrier by offline $\ensuremath{\gamma}$-counting technique. Measured above two are found to be similar well barrier, however, sub-barrier ${}^{7}$Li+${}^{152}$Sm system much higher compared ${}^{7}$Li+${}^{144}$Sm system, manifesting effect of target deformation. Cross present above-barrier larger than previously involving ${}^{6}$Li projectile with same targets,...
Primary goal of the AEḡIS experiment is to precisely measure free fall antihydrogen within Earth’s gravitational field. To this end, cold (≈50 K) will traverse a two-grid moiré deflectometer before annihilating onto position-sensitive detector, which shall determine vertical position annihilation vertex relative grids with micrometric accuracy. Here, we introduce vertexing detector based on modified mobile camera sensor and experimentally demonstrate that it can antiproton annihilations...
In state-of-the-art positron emission tomography (PET), information about annihilation photon polarization is unavailable. Here, we present a PET scanner built from plastic scintillators, where photons primarily interact via the Compton effect, providing both and propagation direction. Using this plastic-based PET, determined distribution of relative angle between planes positron-electron in porous polymer. The amplitude observed smaller than predicted for maximally quantum entangled...
Abstract Purpose The time-over-threshold (TOT) technique is being used widely due to itsimplications in developing the multi-channel readouts, mainly when fast signal processing required. Using TOT technique, as a measure of energy loss instead charge integration methods, significantly reduces readout costs by combining time and information. Therefore, this approach can potentially be utilized J-PET tomograph which built from plastic scintillators characterized light signals. drawback...
Antihydrogen formation at AEgIS CERN leverages charge exchange between Rydberg positronium (Ps*) and antiprotons, with cross-sections scaling the Ps principal quantum number $n^4$ inversely relative velocity $𝑣^{−2}$. However, motional Stark effect mismatch antiprotons impose stringent constraints, limiting efficiency. Advances in transmission converters mitigate self-ionization losses improve alignment, promising a significant boost antihydrogen yield. This work evaluates cross-sections,...
The complete and incomplete fusion cross sections for $^{7}$Li+$^{124}$Sn reaction were measured using online offline characteristic $\gamma$-ray detection techniques. (CF) at energies above the Coulomb barrier found to be suppressed by $\sim$ 26 \% compared coupled channel calculations. This suppression observed in is commensurate with total (ICF) sections. There a distinct feature ICF sections, i.e., $\textit{t}$-capture dominant than $\alpha$-capture all energies. A simultaneous...
The Jagiellonian PET (J-PET) technology, based on plastic scintillators, has been proposed as a cost effective tool for detecting range deviations during proton therapy. This study investigates the feasibility of using J-PET monitoring by means detailed Monte Carlo simulation 95 patients who underwent therapy at Cyclotron Centre Bronowice (CCB) in Krakow, Poland. 
Approach: Discrepancies between prescribed and delivered treatments were artificially introduced simulations shifts patient...