A5072159133- Advanced X-ray and CT Imaging
- Advanced Semiconductor Detectors and Materials
- Medical Imaging Techniques and Applications
- Ion-surface interactions and analysis
- Particle Detector Development and Performance
- Advanced X-ray Imaging Techniques
- Integrated Circuits and Semiconductor Failure Analysis
- Nuclear Physics and Applications
- Radiomics and Machine Learning in Medical Imaging
- Radiation Detection and Scintillator Technologies
- Radiation Dose and Imaging
- X-ray Diffraction in Crystallography
- Radiation Shielding Materials Analysis
- Surface and Thin Film Phenomena
- Silicon and Solar Cell Technologies
- Terahertz technology and applications
- Semiconductor Quantum Structures and Devices
- Electron and X-Ray Spectroscopy Techniques
- Advanced Sensor Technologies Research
- Advanced Materials Characterization Techniques
Excillum (Sweden)
2017-2022
University of Bergen
2013-2016
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This article presents the results of an experimental investigation energy spectra charge carrier traps in undoped high-resistivity ZnSe single crystals.Fourteen peaks were found thermostimulated luminescence samples at temperatures between 8 K and 450 K, thermal activation energies estimated for most intense peaks.It was that exhibit oscillatory regularity, a vibrational quantum to be ω = 206 cm -1 , which is good agreement with mode Raman spectrum.Additionally, linear relationship observed...
Experimental investigations of temperature dependences X-ray luminescence, and dark conductivity undoped crystals ZnSe has been investigated. It shown that the samples with temperatures T > 400 K is conditioned by thermal delocalization carriers from deep levels ET = 0.83 eV, magnitude decreases heating until 350 K, but increases — higher temperatures. Due to this behavior it can be possible use them as X- or gamma ray detectors for hightemperature environment (high-temperature detectors).
Abstract The size and shape of the focal spot, i.e. area where x-rays are generated in an x-ray tube, is a key figure merit radiographic imaging system, because it governs achievable resolution and, if irregular, can introduce anisotropic blur radiographs. Size mainly determined by diameter accelerated electron-beam electron interactions with target material. Since spot parameters change over time, due to wear drift optics, traceable methods monitor required. Here, we present method map 2D...
Monte Carlo simulations were used to study photon production in a panoramic X-ray tube with conical tungsten target determine the optimal characteristics of shape and electron beam configuration. Several performed for accelerating potentials equal 250 kV, 300 500 kV beams various radii anode sizes. The angular distribution intensity was analysed by numerical calculations an assembly composed external collimator cylindrical hole simulate scanning system pencil beam.
Measurements of intrinsic conductivity and X-ray induced were performed on specially undopped ZnSe samples. The measurements demonstrated that sensors made have minor when heating up to the temperature 180 °C, significant conductivity. Dose dependence "dose rate - current" is described with simple power function which considerably simplifies calibration sensors. This results can be used during designing high-temperature gamma-radiation detectors for radiation hot rolling thickness gauges are...
High-end x-ray diffraction, scattering and imaging techniques such as high-resolution XRD, protein crystallography, phase contrast SAXS rely heavily on the source brightness for resolution exposure time. Traditional solid or rotating anode tubes are typically limited in by when e-beam power density melts anode. The liquid-metal-jet technology has overcome this limitation using an that is already molten state.