Conveners
Session at Shizuoka University: Invited talks
- Danil Ilchuck (Taras Shevchenko National University of Kyiv)
Session at Shizuoka University: Student talks
- Maria Kasianchuk ()
Recent advancements in multi-energy X-ray computed tomography (CT) have garnered significant attention in non-destructive testing (NDT), allowing the segmentation of materials based on variations in X-ray absorption spectra across different energy bands. This study explores integrating multi-energy X-ray CT data with mixed reality (MR) technology to provide a spatial representation of internal...
Polarization poses a significant challenge in cadmium telluride (CdTe) detectors, preventing the simultaneous achievement of high energy resolution and long-term stability at room temperature. The mechanism driving bias-induced polarization is presumed to involve an increase in the number of ionized acceptors resulting from hole detrapping. Simultaneously, the accumulation of negative charges...
Thallium Bromide (TlBr) is a compound semiconductor with a wide band gap(2.68 eV). TlBr can be formed into thin films by vacuum evaporation, and large areas can be produced without a tiling process. TlBr is potentially suitable for FPD applications.
TlBr thin films deposited by vacuum evaporation was evaluated. In direct conversion semiconductor detectors, the quality of the semiconductor...
Demand for nondestructive testing using X-ray imaging is increasing, and it is used in a variety of situations to identify defects and damage in precision equipment. In X-ray imaging, it is difficult to accurately position the X-ray source, object, and detector on the irradiation axis because the trajectory of the X-rays is impossible to see with the human eye. In this research, we propose a...
TlBr (thallium bromide) is one of the materials used in semiconductor detectors.
Due to its characteristics, it is generally being researched as a semiconductor detector for
high-energy X-rays that can operate at room temperature, but it suffers from low carrier
mobility and a reduction in energy resolution due to signal rise time. Therefore, we will
consider fabricating a semiconductor...
CdTe used as a semiconductor detector has the advantages of high sensitivity to high energy and the ability to operate at room temperature. However, its charge collection efficiency is lower than that of Si and Ge. To ensure sufficient charge collection efficiency, it is desirable to use a structure that allows the application of high voltages. Therefore, when used as a CdTe detector, it is...
Backscattered X-ray imaging is a non-destructive inspection technique that uses X-rays scattered back from an object. Compared to X-ray transmission imaging, backscatter X-ray imaging has the advantage that the source and detector can be placed on the same side of the object and is used for inspection of thick objects and structures. However, due to the high attenuation of X-rays by soil, it...
CdTe is an excellent material for semiconductor X-ray detectors that can be operated at room temperature, but its K-edge around 30 keV results in a low line attenuation coefficient in the lower energy region. We propose gallium nitride (GaN) as a new semiconductor detector material, which has a higher linear attenuation coefficient than CdTe in the low energy region of about 10 to 26 keV and...
In recent years, the concern over the insecure supply of minor metals such as tantalum in Japan has prompted recycling from waste materials such as printed circuit boards.Techniques have been developed to strip metal parts from printed circuit boards, but it is difficult to completely separate parts containing a wide variety of metals, and some loss is incurred.Therefore, we propose a method...
X-ray backscattering emerges as a pivotal technique in the realm of subsurface exploration, offering a non-invasive approach to material characterization beneath the soil. This method is significant due to its ability to provide detailed insights into the composition and structure of buried materials without direct physical contact, a feature crucial in fields like geology and environmental...
