Article
Chemistry, Multidisciplinary
Mingzhu Hu, Yumeng Wang, Shengpeng Hu, Zongpeng Wang, Bi Du, Yanjun Peng, Jiawei Yang, Yunjie Shi, Dongdong Chen, Xi Chen, Ziwen Zhuang, Zhixun Wang, Xi Chen, Jiecheng Yang, Yongshuai Ge, Eyu Wang, Quan Wen, Shuang Xiao, Ming Ma, Weimin Li, Jie Zhang, De Ning, Lei Wei, Chunlei Yang, Ming Chen
Summary: A new strategy of embedding liquid scintillators into lead-containing fiber-optical plates has been developed, resulting in an X-ray detector with high sensitivity and high spatial resolution.
Article
Instruments & Instrumentation
Zhenyu Sun, Fan Zhou, Zhe Cao, Ziheng Zhou, Xiaohu Wang, Jianhui Yuan, Xiru Huang, Changqing Feng, Ping Cao, Qi An
Summary: A compact gamma spectrometer was designed for deep ocean environments, featuring small size, light weight, and low power consumption. The spectrometer utilized novel detector and electronic components for real-time or autonomous operation, and included online multi-channel summation with temperature calibration to improve detection efficiency. Relevant laboratory tests demonstrated successful critical techniques and system performance.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Instruments & Instrumentation
J. A. Brown, T. A. Laplace, B. L. Goldblum, J. J. Manfredi, T. S. Johnson, F. Moretti, A. Venkatraman
Summary: This study evaluates the suitability of the EJ-204 plastic scintillator as a reference standard for measuring the absolute light yield of organic scintillators. The results show that the absolute light yield of the fresh samples is lower than the manufacturer-reported value, and the aged samples have significantly lower light yields. These findings suggest caution should be exercised when using plastic scintillators in photon counting applications.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Instruments & Instrumentation
S. Bae, J. W. Hwang, S. Ahn, S. M. Cha, K. I. Hahn, D. Kim, Y. H. Kim, C. Park, X. Pereira Lopez, C. Kim
Summary: The characteristics of a Silicon Photo Multiplier (SiPM)-based scintillation detector system were studied, including the influence of bias voltage and the number of SiPMs on the energy resolution. The energy spectra of single SiPMs in the multi-SiPM system were found to depend on the position of the 60Co radiation source. The potential application of geometric mean in the multi-SiPM system was considered for single channel calibrations bypass.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2023)
Article
Engineering, Electrical & Electronic
Keiichiro Miyazaki, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
Summary: RbI:Tl and RbI:Tl co-doped with Sb, Bi, Sm, and Yb were prepared using the vertical Bridgman-Stockbarger technique, and the effects of co-doping on photoluminescence (PL) and scintillation properties were investigated. Only the sample co-doped with Bi showed a decrease in PL quantum yield due to self-absorption induced by Bi3+, while the other samples showed similar values. The afterglow levels at 20 ms after X-ray irradiation for 2 ms were reduced to 4300 ppm and 4800 ppm in the Sb- and Bi-co-doped samples, respectively. Sb and Yb co-doping increased the light yield (LY), and the highest LY of 7800 photons/MeV was obtained by co-doping Sb under Cs-137 gamma-ray (662 keV) irradiation.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Optics
Yuxuan Li, Xiaobin Liu, Xuetong Li, Lanxuan Zhang, Baisong Chen, Zihao Zhi, Xueyan Li, Guowei Zhang, Peng Ye, Guanzhong Huang, Deyong He, Wei Chen, Fengli Gao, Pengfei Guo, Xianshu Luo, Guoqiang Lo, Junfeng Song
Summary: This study proposes a Ge-on-Si APD operating at room temperature, with low dark current and low breakdown voltage, combined with an RF amplifier module and counter for efficient detection of 1550 nm weak light signals.
CHINESE OPTICS LETTERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Huy Le Viet, Hiroyuki Miyamaru, Takao Kojima
Summary: A compact gamma-ray sensor composed of a CdS photoresistor and a small-sized cesium iodine doped thallium scintillator is introduced for intense gamma-ray monitoring. The sensor demonstrates radiation-resistant ability, linear output response, and feasibility in various conditions. Experimental results show its advantages as an inexpensive, robust, compact, and high-sensitivity device for gamma-ray measurements in intense fields.
APPLIED RADIATION AND ISOTOPES
(2021)
Article
Optics
Hewei Zhang, Yanli Zhao, Qian Li, Yang Tian, Wenqiang Ding, Zebiao Lin, Xuyang Feng, Xuzhen Yu
Summary: In this study, a metalens array is integrated with a micro APD array to enhance the broadband absorption efficiency of APDs at optical communication wavelengths. This design offers the possibility of reducing the effective size of the APD while improving broad-band optical response.
OPTICS COMMUNICATIONS
(2022)
Article
Instruments & Instrumentation
Hiromitsu Takahashi, Naoyoshi Hirade, Nagomi Uchida, Kengo Hirose, Tsunefumi Mizuno, Yasushi Fukazawa, Kazutaka Yamaoka, Hiroyasu Tajima, Masanori Ohno
Summary: In this study, the low-energy performances of three multi-pixel photon counters (MPPCs) provided by Hamamatsu K.K. were compared when reading BGO and CsI (Tl) scintillators, showing that S14160-6050HS had higher quantum efficiency and gain, S13360-6050VE had a lower threshold with BGO, and S13360-6050CS performed poorly due to the black case absorbing photons.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2021)
Article
Instruments & Instrumentation
T. Teranishi, Y. Ueno, M. Osada, S. Oka, K. Iribe, H. Yoshida, H. Sakai, T. Kubo
Summary: CsI(Tl) scintillation detectors based on a silicon photomultiplier (SiPM) were tested for low-energy proton detection. A saturation correction method based on a non-paralyzable dead time model was proposed to achieve energy linearity. The setup using the SiPM with a 25 mu m pixel pitch successfully separated protons and deuterons at energies from 3 to 12 MeV.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2021)
Article
Agronomy
William L. Bauerle
Summary: Short-term elevated CO2 had significant effects on canopy carbon gain in Humulus lupulus L., especially under suboptimal light conditions; carbon uptake increased as CO2 concentrations rose to 500-700 µmol mol(-1); shaded leaves benefited more from increased CO2 compared to light saturated leaves.
AGRICULTURAL AND FOREST METEOROLOGY
(2021)
Article
Physics, Particles & Fields
E. J. Callaghan, B. L. Goldblum, J. A. Brown, T. A. Laplace, J. J. Manfredi, M. Yeh, G. D. Orebi Gann
Summary: This study presents the first measurement of the proton light yield of a water-based liquid scintillator (WbLS) and a pure LAB + 2 g/L 2,5-diphenyloxazole (PPO) mixture (LABPPO). The proton light yields were measured using a double time-of-flight method and a pulsed neutron beam. The results show that the proton light yield of WbLS is approximately 3.8% lower than that of LABPPO, which itself exhibits a relative proton light yield 15-20% higher than previous measurements of a similar sample.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Chemistry, Physical
Keiichiro Miyazaki, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
Summary: Tl-doped KI single crystals were synthesized and their photoluminescence and scintillation characteristics were evaluated. Emission peaks at around 420-440 nm and -350 nm were observed under excitation and X-ray irradiation, respectively. The 0.3% KI:Tl sample showed the highest scintillation light yield and good linearity in energy response to gamma-ray energies.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Pratip Mitra, Ashutosh Gupta, G. Priyanka Reddy, Saurabh Srivastava, Mohit Tyagi, M. K. Sharma, S. C. Gadkari, Probal Chaudhury, A. Vinod Kumar
Summary: An in-house developed scintillator-based gamma spectrometry system has been created, which is standalone, solar-powered, and battery operated. The system reduces power consumption and size, enabling accurate detection of environmental radiation in field deployments.
APPLIED RADIATION AND ISOTOPES
(2021)
Article
Physics, Particles & Fields
A. Sidorenkov, O. Borshchev, A. Fazliakhmetov, A. Lukanov, B. Lubsandorzhiev, S. Lubsandorzhiev, D. Nanzanov, S. Ponomarenko, M. Skorotetcky, N. Surin, E. Svidchenko, N. Ushakov, D. Voronin
Summary: A new high light yield liquid scintillator based on linear alkylbenzene (LAB) as an organic solvent and a novel nanostructured organosilicon liminophore as a scintillation fluor has been developed. It has a light yield almost two times higher than traditional LAB-based liquid scintillator and a shorter decay time for light emission.
EUROPEAN PHYSICAL JOURNAL C
(2022)
