scholarly journals Materials Modeling for High-Performance Radiation Detectors

2014 ◽  
Author(s):  
Vincent Lordi ◽  
Nicole Adelstein ◽  
Joel Varley ◽  
Keith Ray ◽  
Daniel Åberg ◽  
...  
Keyword(s):  
High Performance ◽  
Radiation Detectors ◽  
Materials Modeling

scholarly journals Evaluation of Various Scintillator Materials in Radiation Detector Design for Positron Emission Tomography (PET)

Crystals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 869
Author(s):  
Siwei Xie ◽  
Xi Zhang ◽  
Yibin Zhang ◽  
Gaoyang Ying ◽  
Qiu Huang ◽  
...  
Keyword(s):  
Positron Emission Tomography ◽  
High Performance ◽  
Radiation Detector ◽  
Experimental Studies ◽  
Light Output ◽  
Radiation Detectors ◽  
Emission Tomography ◽  
Timing Resolution ◽  
Positron Emission ◽  
Co Doped

The performance of radiation detectors used in positron-emission tomography (PET) is determined by the intrinsic properties of the scintillators, the geometry and surface treatment of the scintillator crystals and the electrical and optical characteristics of the photosensors. Experimental studies were performed to assess the timing resolution and energy resolution of detectors constructed with samples of different scintillator materials (LaBr3, CeBr3, LFS, LSO, LYSO: Ce, Ca and GAGG) that were fabricated into different shapes with various surface treatments. The saturation correction of SiPMs was applied for tested detectors based on a Tracepro simulation. Overall, we tested 28 pairs of different forms of scintillators to determine the one with the best CTR and light output. Two common high-performance silicon photomultipliers (SiPMs) provided by SensL (J-series, 6 mm) or AdvanSiD (NUV, 6 mm) were used for photodetectors. The PET detector constructed with 6 mm CeBr3 cubes achieved the best CTR with a FWHM of 74 ps. The 4 mm co-doped LYSO: Ce, Ca pyramid crystals achieved 88.1 ps FWHM CTR. The 2 mm, 4 mm and 6 mm 0.2% Ce, 0.1% Ca co-doped LYSO cubes achieved 95.6 ps, 106 ps and 129 ps FWHM CTR, respectively. The scintillator crystals with unpolished surfaces had better timing than those with polished surfaces. The timing resolution was also improved by using certain geometric factors, such as a pyramid shape, to improve light transportation in the scintillator crystals.

High-performance diamond radiation detectors produced by lift-off method

2016 ◽  
Vol 113 (6) ◽  
pp. 62001 ◽  
Author(s):  
Takehiro Shimaoka ◽  
Junichi H. Kaneko ◽  
Masakatsu Tsubota ◽  
Hiroaki Shimmyo ◽  
Hideyuki Watanabe ◽  
...  
Keyword(s):  
High Performance ◽  
Radiation Detectors ◽  
Lift Off

scholarly journals Characteristics of TlBr single crystals grown using the vertical Bridgman-Stockbarger method for semiconductor-based radiation detector applications

2016 ◽  
Vol 34 (2) ◽  
pp. 297-301 ◽  
Author(s):  
Dong Jin Kim ◽  
Joon-Ho Oh ◽  
Han Soo Kim ◽  
Young Soo Kim ◽  
Manhee Jeong ◽  
...  
Keyword(s):  
Single Crystals ◽  
High Performance ◽  
Radiation Detector ◽  
Radiation Detectors ◽  
Middle Part ◽  
High Quality ◽  
Single Crystalline ◽  
Crystalline Sample ◽  
Vertical Bridgman ◽  
Stockbarger Method

AbstractTlBr single crystals grown using the vertical Bridgman-Stockbarger method were characterized for semiconductor based radiation detector applications. It has been shown that the vertical Bridgman-Stockbarger method is effective to grow high-quality single crystalline ingots of TlBr. The TlBr single crystalline sample, which was located 6 cm from the tip of the ingot, exhibited lower impurity concentration, higher crystalline quality, high enough bandgap (>2.7 eV), and higher resistivity (2.5 × 1011 Ω·cm) which enables using the fabricated samples from the middle part of the TlBr ingot for fabricating high performance semiconductor radiation detectors.

scholarly journals Silicon Carbide Microstrip Radiation Detectors

Micromachines ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 835 ◽  
Author(s):  
Donatella Puglisi ◽  
Giuseppe Bertuccio
Keyword(s):  
Silicon Carbide ◽  
High Performance ◽  
Radiation Detector ◽  
Radiation Detectors ◽  
Wide Bandgap ◽  
Wide Range ◽  
Position Sensitive ◽  
Silicon And Germanium ◽  
Full Depletion ◽  
Prototype Detector

Compared with the most commonly used silicon and germanium, which need to work at cryogenic or low temperatures to decrease their noise levels, wide-bandgap compound semiconductors such as silicon carbide allow the operation of radiation detectors at room temperature, with high performance, and without the use of any bulky and expensive cooling equipment. In this work, we investigated the electrical and spectroscopic performance of an innovative position-sensitive semiconductor radiation detector in epitaxial 4H-SiC. The full depletion of the epitaxial layer (124 µm, 5.2 × 1013 cm−3) was reached by biasing the detector up to 600 V. For comparison, two different microstrip detectors were fully characterized from −20 °C to +107 °C. The obtained results show that our prototype detector is suitable for high resolution X-ray spectroscopy with imaging capability in a wide range of operating temperatures.

scholarly journals Halide lead perovskites for ionizing radiation detection

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Haotong Wei ◽  
Jinsong Huang
Keyword(s):  
Ionizing Radiation ◽  
High Performance ◽  
Direct Detection ◽  
Low Cost ◽  
Radiation Detection ◽  
Radiation Detectors ◽  
Solution Processes ◽  
Current State ◽  
X Ray Imaging ◽  
Halide Perovskites

Abstract Halide lead perovskites have attracted increasing attention in recent years for ionizing radiation detection due to their strong stopping power, defect-tolerance, large mobility-lifetime (μτ) product, tunable bandgap and simple single crystal growth from low-cost solution processes. In this review, we start with the requirement of material properties for high performance ionizing radiation detection based on direct detection mechanisms for applications in X-ray imaging and γ-ray energy spectroscopy. By comparing the performances of halide perovskites radiation detectors with current state-of-the-art ionizing radiation detectors, we show the promising features and challenges of halide perovskites as promising radiation detectors.

scholarly journals New approaches to the creation of high-performance radiation detectors for concentrator solar modules

Radiotekhnika ◽  
2019 ◽  
Vol 2 (197) ◽  
pp. 123-136
Author(s):  
В.Н. Борщев ◽  
А.М. Листратенко ◽  
М.А. Проценко ◽  
И.Т. Тымчук ◽  
А.В. Кравченко ◽  
...  
Keyword(s):  
High Performance ◽  
Radiation Detectors ◽  
New Approaches ◽  
The Creation
Sign in / Sign up

Export Citation Format

Share Document