A5039134881- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Particle Detector Development and Performance
- Medical Imaging Techniques and Applications
- Magnetic confinement fusion research
- Nuclear physics research studies
- Superconducting Materials and Applications
- Fusion materials and technologies
- Radiation Therapy and Dosimetry
- Atomic and Subatomic Physics Research
- Terahertz technology and applications
- Nuclear reactor physics and engineering
- Atomic and Molecular Physics
- Gamma-ray bursts and supernovae
- Advanced Semiconductor Detectors and Materials
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Quantum, superfluid, helium dynamics
- Spectroscopy and Laser Applications
- Laser-Plasma Interactions and Diagnostics
- Advanced Chemical Physics Studies
- Spacecraft Design and Technology
- Radioactive Decay and Measurement Techniques
- Particle physics theoretical and experimental studies
- Scientific Research and Discoveries
Culham Science Centre
2024
Culham Centre for Fusion Energy
2024
National Centre for Nuclear Research
2015-2023
Royal Military Academy
2020
Centrum Badań Jakości
2016
University of Warsaw
2010-2015
Joint Institute for Nuclear Research
2015
Results of decay spectroscopy on nuclei in vicinity the doubly magic 48Ni are presented. The measurements were performed with a Time Projection Chamber optical readout which records tracks ions and protons gaseous volume. Six decays including four events two-proton ground-state radioactivity recorded. An advanced reconstruction procedure yielded 2p energy for Q2p = 1.29(4) MeV. In addition, spectra \b{eta}-delayed emitted 44Cr 46Fe, as well half-lives branching ratios determined. results...
The decay of the extremely neutron-deficient $^{48}\mathrm{Ni}$ was studied by means an imaging time-projection chamber, which allowed recording tracks charged particles. decays six atoms were observed. Four them clearly correspond to two-proton radioactivity, providing first direct evidence for this mode in $^{48}\mathrm{Ni}$. Two represent $\ensuremath{\beta}$-delayed proton emission. half-life is determined be ${T}_{1/2}=2.{1}_{\ensuremath{-}0.4}^{+1.4}$ ms.
Abstract The combination of plastic scintillators with Silicon Photo-Multipliers (SiPMs) is widely used for detecting radiation in high-energy astrophysics, particle physics, neutrino or medical physics. An example application this kind detectors are Compton polarimeters such as POLAR-2 [1,2,3] LEAP [4,5,6] which a low-Z material needed the effect to be dominant down low energy possible. Such aim measure depositions organic produce small amounts optical light because deposited and...
In this work, we describe the solution developed by gamma ray camera upgrade enhancement project to improve spectroscopic properties of existing JET γ-ray camera. Aim is enable gamma-ray spectroscopy in deuterium-tritium plasmas. A dedicated pilot spectrometer based on a LaBr3 crystal coupled silicon photo-multiplier has been developed. proper pole zero cancellation network able shorten output signal length 120 ns implemented allowing for at MHz count rates. The system characterized...
Abstract LaBr 3 :Ce,CeBr and GAGG:Ce scintillators were investigated the determined characteristics compared with those obtained for well-known widely used CsI:Tl NaI:Tl crystals. All detectors of same size 10 × 5 mm . The aim this test study was to single out scintillation most suitable γ-ray spectrometry emission radial profile measurements in high-temperature plasma experiments. Decay time, energy resolution, non-proportionality full peak detection efficiency ere measured energies up 1770...
In forthcoming deuterium-tritium (DT) experiments on JET a significant population of alpha-particles will be produced. For operating alpha-particle diagnostics at high DT neutron fluxes, specific improvements have to made. Proposed new detectors for gamma-ray measurements based CeBr3 and LaBr3:Ce scintillators. They are characterized by good energy resolution, relatively detection efficiency few MeV gamma-rays fast response time. An overview scintillator parameters is presented. A...
The JET tangential gamma-ray spectrometer is undergoing an extensive upgrade in order to make it compatible with the forthcoming deuterium-tritium (DT) experiments. paper presents results of design for main components beam-line: tandem collimators, shields, and neutron attenuators. existing collimators will be upgraded by installing two additional collimator modules. Two shields define field-of-view at detector end line-of-sight. A set three lithium hydride attenuators used control level...
Basic concepts and the development of a high counting rate digital spectrometry system based on efficient ADCs latest available FPGA are presented with aim using such system, coupled to fast scintillators, in plasma experiments. The prototype is 1 channel 12-bit GSPS digitizer 2 Vpp input voltage. Preliminary results tested different radioactive sources shown for low (0.03 Mcps) (2.2 rates. A comparison energy spectra resolution what obtained by commercial device also shown.
The photon spectrum accompanying the orbital $K$-electron capture in first-forbidden unique decay of $^{81}\mathrm{Kr}$ was measured. total radiation intensity for energies larger than 50 keV found to be $1.42(22)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ per $K$ capture. Both shape and its relative ordinary, nonradiative rate are compared theoretical predictions. best agreement is recently developed model that employs length gauge electromagnetic field.
Multi-Purpose Detector (MPD) is a part of Nuclotron-based Ion Collider fAcility (NICA) located in Dubna, Russia. For full functionality, the MPD needs an additional trigger system for off-beam calibration subdetectors and rejection cosmic ray particles (mainly muons). The could also be useful astrophysics observations showers initiated by high energy primary particles. consortium NICA-PL comprised several Polish scientific institutions has been formed to define goals basic assumptions Cosmic...
This paper presents the results of proton irradiation silicon photomulipliers (SiPMs) by mono-energetic 170 MeV protons with fluence up to 4.6$\times$10$^{9}$ particles/cm$^2$. In our work, three types photodetectors from Hamamatsu areas 3$\times$3 mm$^2$ and different subpixel sizes 25$\times$25 $\mu$m$^2$, 50$\times$50 75$\times$75 $\mu$m$^2$ were used. The changes in SiPM dark count rate (DCR) spectrum before after temperatures range 20 $^\circ$C -65 are presented. influence DCR on energy...
Spectroscopic performance of 4 types large detectors consisting 3 different scintillators (LaBr <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> , NaI(Tl) and BGO) coupled to MPPC array are presented. The measurements made with S12642-1616PB-50(X) Hamamatsu TSV having a 50×50 μm xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> cell size effective active area 48×mm (16×16 channels). In all the common readout channels is used. results...
POLAR-2, a plastic scintillator based Compton polarimeter, is currently under development and planned for launch to the China Space Station in 2025. It intended shed new light on our understanding of Gamma-Ray Bursts by performing high precision polarization measurements their prompt emission. The instrument will be orbiting at an average altitude 383 km with inclination 42° subject background radiation from cosmic rays solar events. In this work, we tested performance scintillation bars,...
The combination of plastic scintillators with Silicon Photo-Multipliers (SiPMs) is widely used for detecting radiation in high-energy astrophysics, particle physics, neutrino or medical physics. An example application this kind detectors are Compton polarimeters such as POLAR-2 LEAP, which a low-Z material needed the effect to be dominant down low energy possible. Such aim measure depositions produce small amounts optical light, and optimizing instrumental properties consequently imperative....
Abstract The analysis of the light response thallium-doped cesium iodide to gamma radiation was performed on single scintillation waveforms recorded using a digital oscilloscope. As an alternative classical pulse processing procedures, use dynamic integration times instead fixed shaping/integration demonstrated. time, changeable with amplitudes CsI:Tl pulses, allowed optimise collection simultaneous minimization noise contribution. It shown that for low-energy γ -rays (22 keV–60 keV), pulses...
This paper presents the results of fast neutron irradiation (E n > 0.5 MeV) an EJ-276 scintillator performed in MARIA research reactor with fluence up to 5.3×10 15 particles/cm 2 .In our work, four samples size φ 25.4 mm×5 mm were tested.The changes light yield, emission and absorption spectrum neutron/gamma discrimination using PuBe source before after are presented.The figure merit based on charge integration method for different fluences short gate times determined.
Abstract This report presents a concept of constructing detector dedicated for detection muons observed during measurements carried out at the MPD (Multi-Purpose Detector) that is currently under construction NICA facility, Russia, Dubna. It has been proposed to design and build an additional will complement current set increase its measurement capabilities. The main goal this project provide information from cosmic pass in both in-beam off-beam experiments. Hence, called COsmic Ray Detector...
Evolution of spectroscopic properties two types Multi-Pixel Photon Counters (MPPC) during neutron irradiation is reported. In such experiments the change MPPCs characteristics a serious issue. A series tests were performed at National Centre for Nuclear Research (NCBJ, Poland) and Joined Institute (JINR, Russia). Two sources used: PuBe with continous energy spectrum up to 11 MeV mono-energetic 4.8 neutrons produced in (d,d) reaction. For both cases fluence range 10 <sup...