A5054894795- Advanced Semiconductor Detectors and Materials
- Radiation Detection and Scintillator Technologies
- Advanced X-ray and CT Imaging
- Nuclear Physics and Applications
- Particle Detector Development and Performance
- Semiconductor Quantum Structures and Devices
- Graphite, nuclear technology, radiation studies
- Superconducting and THz Device Technology
- Advanced Thermodynamic Systems and Engines
- Radioactivity and Radon Measurements
- Radioactive contamination and transfer
- Calibration and Measurement Techniques
- Chalcogenide Semiconductor Thin Films
- Luminescence Properties of Advanced Materials
- Machine Learning in Materials Science
- Electronic and Structural Properties of Oxides
- Optical properties and cooling technologies in crystalline materials
- Solid-state spectroscopy and crystallography
- Spacecraft and Cryogenic Technologies
- Nuclear reactor physics and engineering
- Optical and Acousto-Optic Technologies
- Perovskite Materials and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- CCD and CMOS Imaging Sensors
- Infrared Target Detection Methodologies
Baltic Studies Centre
2011-2024
University of the Witwatersrand
2018
Universidad de Cantabria
2018
Bruker (United States)
2011
Bruker (Canada)
2008
University of Latvia
2007
We present the results of a detailed experimental study polarization effects in thallium bromide planar x-ray detectors. Measurements were carried out range 10–100 keV by scanning highly focused beam, 50 μm diameter, from synchrotron source across detector. Above certain radiation threshold detector response showed systematic degradation its spectroscopic characteristics, peak channel position, height, and energy resolution. Using pump-and-probe technique, we studied dynamics spectral...
TlBr crystals, grown by hydrothermal and "Bridgman-Stockbarger" methods, were investigated as potential single pixel detectors of X- gamma radiation. Technology manufactured from crystals is reported. The spectra the radionuclides Fe-55, Am-241, Cd-109, Co-57, Cs-137, measured are presented. Full-width at half-maximum (FWHM) energy resolutions 500 eV 5.9 keV; 518 9.87 670 13.92 777 22.1 2.7 keV 59.5 3.7 88 4.4 At 122 keV, 29 662 have been achieved. Small format (3/spl times/3) with pads...
Recent developments in TlBr material preparation and growth technology have led to much improved crystal quality, detector performances most importantly, reproducibility. In this paper, we describe some of the technological steps developed that allowed us produce reproducible spectrometric grade crystals for applications present spectroscopic results. Typical a specific resistance (3-5) times10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Abstract In this study, a tritium enrichment system in the water phase has been developed based on combination of proton exchange membrane (PEM) electrolysis cell and fuel cell. As PEM, Nafion TM laboratory-synthesized sulfonated poly(ether ether ketone) membranes modified with an additional graphene layer order to enhance separation factor were used. Both differences kinetics hydrogen evolution reaction transport through different isotopes are driving factors expected affect isotopes. The...
The in-situ identification of the isotope causing a radiation alarm at border crossing is essential for quick resolution case. Commonly, hand-held radioisotope devices (RIDs) are used to address this task. Although number such commercially available, there still gap between requirements users and what actually available. Two components optimal performance devices: i) quality raw data-the gamma spectra, ii) software matching specifics certain detector. In paper, we investigate new spectral...
The performance of hand-held radioisotope identification devices (RIDs) is still hampered by the NaI(Tl) detectors, which are commonly used in such instruments. In this paper, we continue search for better detector options. One largest single elements ever made, a coplanar CdZnTe (CZT) (30times15times12.1 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> volume 5.45 cm designed University Michigan) compared with commercially available...
We present the results of an experimental study a special type CdZnTe detector hard x and γ rays—a ring-drift detector. The device consists double ring electrode structure surrounding central point anode with guard plane outer ring. can be operated in two distinctively different modes charge collection—pseudohemispherical pseudodrift. response profiles obtained by scanning focused x-ray beam over whole area, specifically variations count rate, peak position, energy resolution for rays from...