Article
Engineering, Electrical & Electronic
Katsuyuki Takagi, Kohei Toyoda, Hiroki Kase, Toshiyuki Takagi, Kento Tabata, Tsuyoshi Terao, Hisashi Morii, Akifumi Koike, Toru Aoki, Mitsuhiro Nogami, Keitaro Hitomi
Summary: This study introduces an X-ray imager using TlBr detectors and demonstrates its potential for imaging applications. The proposed imager, constructed using a combination of existing technologies, shows a high modulation transfer function (MTF) and highlights the need for further optimization of flat-panel detector processes to better suit TlBr detectors.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Chang-Chun Fan, Cheng-Dong Liu, Bei-Dou Liang, Ming-Liang Jin, Tong-Yu Ju, Chao-Yang Chai, Xiang-Bin Han, Wen Zhang
Summary: A novel two-dimensional lead bromide perovskite ferroelectric with an out-of-plane polarization was synthesized by a rigid-to-flexible cation tailoring strategy. This material has the potential to miniaturize vertical-sandwich-type ferroelectric optoelectronic devices. The integration of out-of-plane ferroelectricity and excellent photoelectric properties provides a promising platform for investigating ferroelectricity-related effects in vertical optoelectronic devices.
INORGANIC CHEMISTRY
(2023)
Article
Environmental Sciences
Chengxue Ma, Xiaoliu Huangfu, Yijie Zou, Ruixing Huang, Qiang He, Jun Ma
Summary: This study investigates the kinetics and mechanism of thallium(I) oxidation by permanganate (KMnO4) in the presence of bromide (Br-). The results show that Br- has a significant catalytic effect on the oxidation kinetics of thallium(I) by KMnO4 under acidic conditions, while no significant effect is observed under alkaline conditions. Bromine species including HOBr, Br-2, and Br2O play important roles in catalyzing the oxidation of thallium(I) by KMnO4.
Article
Materials Science, Multidisciplinary
Xiangyu Feng, Xilong Xu, Zhonglin He, Rui Peng, Ying Dai, Baibiao Huang, Yandong Ma
Summary: Single-layer VSi2P4 demonstrates valley-related multiple Hall effect and spontaneous valley polarization. Under external strain, it can exhibit the long-sought valley-polarized quantum anomalous Hall effect.
Article
Chemistry, Physical
Bernd Wittmann, Till Biskup, Klaus Kreger, Jurgen Koehler, Hans-Werner Schmidt, Richard Hildner
Summary: The study demonstrates an all-optical approach to manipulate singlet exciton transport pathways within supramolecular nanostructures via singlet-triplet annihilation, enabling effective control of singlet exciton motion. This reversible, all-optical manipulation of singlet exciton transport opens up new possibilities for the design principles of functional photonic nanodevices.
NANOSCALE HORIZONS
(2021)
Article
Chemistry, Physical
Takuto Ushiro, Tatsuya Yokoi, Yusuke Noda, Eiji Kamiyama, Masato Ohbitsu, Hiroki Nagakura, Koji Sueoka, Katsuyuki Matsunaga
Summary: An artificial-neural-network (ANN) interatomic potential trained with data from density-functional-theory (DFT) calculations is developed to reveal favorable modes of large-sized vacancy clusters in silicon. The ANN potential reasonably predicts E-f values and relaxed structures obtained from DFT calculations for all modes examined, indicating better transferability compared to commonly used empirical potentials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Engineering, Manufacturing
Weiwei Peng, Wenying Zhou, Yanqing Zhang, Hongmei Niu, Xinbo Dong, Guangheng Wang, Huiwu Cai, Xiangrong Liu, Mengxue Yuan
Summary: In order to simultaneously improve the dielectric constants (& epsilon;) and breakdown strength (Eb), and restrain the loss of original Si (silicon)/poly(vinylidene fluoride, PVDF), a core@double-shell structured Si@SiO2(silica)@PS(polystyrene)/PVDF composites was prepared. The dielectric properties of composites were investigated in terms of various fillers and frequency, and polarization mechanism was examined. The core@shell particles affect the dielectric properties of composites by fundamentally changing the filler-cluster size, leading to high dielectric constant (& epsilon;) and breakdown strength (Eb) but low loss.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Multidisciplinary Sciences
Lena Frommeyer, Tobias Brink, Rodrigo Freitas, Timofey Frolov, Gerhard Dehm, Christian H. Liebscher
Summary: The phase behavior of grain boundaries can influence interfacial properties. In this study, researchers observed nanoscale patterning of a grain boundary in copper, with two alternating phases undergoing a congruent, diffusionless transition at room temperature.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Oleh Kuzyk, Olesya Dan'kiv, Ihor Stolyarchuk, Roman Peleshchak, Yuriy Pavlovskyy
Summary: In this study, a model of self-consistent electron-deformation-diffusion effects in thin films grown on substrate with lattice parameter mismatch is constructed. The proposed theory considers the interaction between the elastic field and diffusion processes of point defects and the electron subsystem of the semiconductor film. The spatial distribution of deformation, defect concentration, conduction electrons, and electric field intensity is investigated within the developed model, depending on mismatch value, defect type, and average concentrations. It is found that the coordinate dependence of deformation and defect concentration of stretching (compression) centers in the strained film exhibit non-monotonic characteristics, determined by the average concentration of point defects. The study also shows that due to electron-deformation interaction, spatial redistribution of conduction electrons occurs with possible n-n+ transitions. Understanding the self-consistent spatial redistribution of point defects, electrons, and lattice deformation in semiconductor materials is important for the stability and degradation of nano-optoelectronic devices under intense irradiation.
Article
Chemistry, Physical
Sergey A. Fateev, Daria E. Belikova, Pavel A. Ivlev, Nikolai A. Belich, Konstantin A. Lyssenko, Eugene G. Maksimov, Eugene A. Goodilin, Alexey B. Tarasov
Summary: This article introduces a new organic molecule as a surface passivator in hybrid halide perovskites. The passivation regime can be controlled by adjusting treatment parameters, and the monolayer regime significantly improves optical properties and increases photostability.
CHEMISTRY OF MATERIALS
(2022)
Article
Physics, Applied
M. Verma, R. Mukherjee
Summary: Grain boundary grooving can significantly affect the grain growth in polycrystalline thin films with the possibility of grain boundary stagnation. However, in real systems, grooves can migrate along with moving grain boundaries, potentially causing stagnation if behaving like a surface-anchored notch.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Sushrut Modak, Leonid Chernyak, Alfons Schulte, Corinne Sartel, Vincent Sallet, Yves Dumont, Ekaterine Chikoidze, Xinyi Xia, Fan Ren, Stephen J. Pearton, Arie Ruzin, Denis M. Zhigunov, Sergey S. Kosolobov, Vladimir P. Drachev
Summary: Electron beam-induced current was used to measure the minority carrier diffusion length in p-Ga2O3 thin films grown through metal-organic chemical vapor deposition at temperatures ranging from 304 to 404 K. The diffusion length of electrons decreased as the temperature increased. Additionally, cathodoluminescence emission spectroscopy identified optical signatures of acceptor levels associated with the V-Ga(-)-V-O(++) defect complex. The activation energies for the decrease in diffusion length and the quenching of cathodoluminescence emission with increasing temperature were attributed to the thermal de-trapping of electrons from the V-Ga(-)-V-O(++) defect complexes.
Article
Chemistry, Physical
Fangbao Wang, Ruichen Bai, Qihao Sun, Xin Liu, Yuanbo Cheng, Shouzhi Xi, Binbin Zhang, Menghua Zhu, Shuqing Jiang, Wanqi Jie, Yadong Xu
Summary: A CsPbBr3 single crystal with low impurity concentration and high resistivity has been successfully prepared using an inverse temperature crystallization method and a modified precursor composition. By introducing PbBr2・2DMSO adduct in the precursor solution, the resulting crystals exhibit high hole mobility and low dark current. These crystals show excellent performance in radiation detection, achieving high peak-to-valley ratio pulse height spectra and energy resolution.
CHEMISTRY OF MATERIALS
(2022)
Article
Materials Science, Ceramics
Yang Li, Yuchang Qing, Yuerui Zhang, Hailong Xu
Summary: The accordion-like TixO2x-1 derived from Ti3C2Tx MXene by a high-temperature hydrogen reduction process shows superior impedance match and electromagnetic wave absorption capability compared to pristine Ti3C2Tx MXene/TiO2 materials.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Physics, Multidisciplinary
L. Ren, L. Lombez, C. Robert, D. Beret, D. Lagarde, B. Urbaszek, P. Renucci, T. Taniguchi, K. Watanabe, S. A. Crooker, X. Marie
Summary: Using a spatially resolved optical pump-probe experiment, this study measures the lateral transport of spin-valley polarized electrons in a single layer of WSe2 and reveals characteristic spin-valley diffusion lengths. The findings highlight the key roles played by spin relaxation time and pumping efficiency on polarized electron transport.
PHYSICAL REVIEW LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Amlan Datta, Shariar Motakef
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2015)
Article
Engineering, Electrical & Electronic
Amlan Datta, Shariar Motakef
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2015)
Article
Instruments & Instrumentation
S. Lam, S. Swider, J. Fiala, A. Datta, S. Motakef
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2015)
Article
Crystallography
Amlan Datta, Demi Moed, Piotr Becla, Matthew Overholt, Shariar Motakef
JOURNAL OF CRYSTAL GROWTH
(2016)
Article
Nanoscience & Nanotechnology
A. Datta, J. Fiala, P. Becla, Shariar Motakef
Article
Engineering, Electrical & Electronic
Amlan Datta, Piotr Becla, Shariar Motakef
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2018)
Article
Crystallography
Amlan Datta, Piotr Becla, Christo Guguschev, Shariar Motakef
JOURNAL OF CRYSTAL GROWTH
(2018)
Article
Crystallography
Santosh K. Swain, Yunlong Cui, Amlan Datta, Sachin Bhaladhare, Manchanahalli Rohan Rao, Arnold Burger, Kelvin G. Lynn
JOURNAL OF CRYSTAL GROWTH
(2014)
Article
Engineering, Electrical & Electronic
Amlan Datta, Santosh Swain, Yunlong Cui, Arnold Burger, Kelvin Lynn
JOURNAL OF ELECTRONIC MATERIALS
(2013)
Article
Multidisciplinary Sciences
Amlan Datta, Piotr Becla, Shariar Motakef
SCIENTIFIC REPORTS
(2019)
Article
Physics, Applied
Olivia K. Voyce, Mark A. Isaacs, Laura J. Harkness-Brennan, Tim D. Veal, Dan S. Judson, Shariar Motakef, Amlan Datta
Summary: Metal oxides are being studied as an alternative to metal contacts on thallium bromide (TlBr) radiation detectors, forming a type-II staggered heterojunction between TlBr and metal oxides upon contact. The valence band offsets (VBO) and conduction band offsets for SnO2/TlBr and ITO/TlBr heterojunctions have been determined using the Kraut method. The I-V response of symmetric In/SnO2/TlBr and In/ITO/TlBr planar devices is nearly Ohmic with low leakage current.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
A. Datta, R. Toufanian, W. Zhang, P. S. Halasyamani, S. Motakef
Summary: This study demonstrates the potential of gallium oxide (beta-Ga2O3)-based scintillators for high count rate applications, with crystals grown using the optical float zone (FZ) technique showing excellent scintillation properties.
Article
Materials Science, Multidisciplinary
Reyhaneh Toufanian, Santosh Swain, Piotr Becla, Shariar Motakef, Amlan Datta
Summary: This paper reports on the performance and fabrication processes of CsPbBr3 γ detectors, demonstrating good energy resolution and photopeak-to-Compton ratio. Large size ultrahigh purity CsPbBr3 crystals have been successfully grown, and the polarization problem has been mitigated.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Proceedings Paper
Optics
Amlan Datta, Piotr Becla, Demi Moed, Shariar Motakef
HARD X-RAY, GAMMA-RAY, AND NEUTRON DETECTOR PHYSICS XVII
(2015)
Article
Instruments & Instrumentation
Jinlu Ruan, Liang Chen, Pengxiao Xu, Yapeng Zhang, Xue Du, Hongqiao Yin, Shiyi He, Fangbao Wang, Xun Zhang, Xiaoping Ouyang
Summary: A new SiC detector with a faster time response was developed to improve the temporal response of SiC-HPMTs. The improved SiC-HPMT showed significantly enhanced temporal response compared to the previous SiC-HPMT, and it can accurately measure the time information of fast pulsed radiation fields.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Kevin Nash
Summary: This article discusses the need for extensive upgrades of the LHC detectors, particularly the Outer Tracker, due to the demanding conditions and radiation of the High Luminosity LHC scenario. The design choices, technological approaches, and R&D activities for the Outer Tracker Phase-2 upgrade are highlighted.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
S. A. Wotton
Summary: The hadron particle identification provided by LHCb's RICH system is crucial for the success of the experiment, and it will continue to play a significant role in Upgrade II. To maintain the current excellent particle identification performance, substantial improvements in the precision of measuring the space and time coordinates of detected photons in the RICH and in the resolution of the reconstructed Cherenkov angle are required.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
R. Cardarelli, A. Rocchi, G. Aielli, P. Camarri, A. Di Ciaccio, L. Di Stante, B. Liberti, E. Pastori, L. Pizzimento, G. Proto
Summary: The Resistive Cylindrical Chamber (RCC) is a new generation of gaseous particle detectors that overcome the limitations of Resistive Plate Chambers (RPC) and expand their application range. By transitioning from planar to cylindrical geometry, while maintaining an almost planar electric field, the RCC achieves improved detection efficiency, increased gas pressure, and the possibility of using eco-friendly gases.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Giacomo Volpe
Summary: The ALICE collaboration is proposing a new apparatus, ALICE 3, to investigate the Quark Gluon Plasma (QGP) properties. In this context, conceptual studies for the development of a RICH detector for ALICE 3 are ongoing. The proposed baseline layout is a proximity-focusing RICH, using aerogel as Cherenkov radiator and Silicon Photomultipliers for photon detection. The detector specifications and performance obtained by Monte Carlo simulation are presented, along with the R&D challenges related to the design.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
M. G. Mazarakis, E. Jongewaard, J. Ellsworth
Summary: This report presents experimental data and a step-by-step technique for evaluating the work functions of thermionic cathodes. The experiments were conducted using small-sized thermionic cathodes provided by Spectra-Mat corporation. The cathode electron current emission work function is emphasized as a crucial parameter for selecting cathodes in various applications.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
M. Loyd, A. Khaplanov, V. Sedov, J. Beal, T. Visscher, C. Donahue, C. Montcalm, G. Warren, R. Butz, C. Boone, C. Hart, R. Riedel, Y. Diawara
Summary: Thermal and cold neutron beamlines require detector systems with high efficiency, large active area, and good spatial resolution. This study presents a new design of Anger camera using silicon photomultipliers (SiPMs) instead of photomultiplier tubes (PMTs), offering better resolution, less distortion, and more compactness. The use of SiPMs also enables the camera to be used in strong magnetic fields, providing additional experimental capabilities.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Thomas Neulinger, Hanno Filter, Oliver Zimmer
Summary: This paper describes the mathematical foundation for analyzing vertical time-of-flight (TOF) measurements using ultracold neutrons (UCN). It enables the spectroscopy of UCN with kinetic energies below the neutron optical potential of the detector entrance window. The paper provides general treatment methods and transformation rules for converting vertical TOF spectra into other spectra of interest.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Huynh Dinh Chuong, Nguyen Huynh Duy Khang, Le Thi Ngoc Trang, Nguyen Thi Truc Linh, Truong Thanh Sang, Nguyen Thanh Dat, Hoang Duc Tam
Summary: This paper presents a comparative study of three models, including virtual point detector (VPD), curve fitting (CF), and machine learning (ML), in determining the full-energy peak efficiency (FEPE) of HPGe detector. The study found that the ML model outperforms VPD and CF models in terms of accuracy.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
M. H. Kushoro, M. Angelone, D. Bozzi, G. Gorini, F. La Via, E. Perelli Cippo, M. Pillon, M. Tardocchi, M. Rebai
Summary: This paper presents the characterization of a series of SiC detectors operated with partial polarization, achieving excellent energy resolution and detection characteristics for both alpha particles and neutrons. The results demonstrate the potential of SiC detectors for fast neutron detection in fusion experiments. The limitations and challenges for manufacturing thick SiCs in the future are also discussed.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Deb Sankar Bhattacharya, Andrea Bressan, Chandradoy Chatterjee, Silvia Dalla Torre, Mauro Gregori, Alexander Kiselev, Stefano Levorato, Anna Martin, Saverio Minutoli, Mikhail Osipenko, Richa Rai, Marco Ripani, Fulvio Tessarotto, Triloki Triloki
Summary: In this article, we report on the measurement of the time resolution of an LAPPD prototype using Cherenkov radiation emitted by high energy hadrons. Our approach has demonstrated the capability of measuring time resolutions as fine as 25-30 ps. The measured time resolution for single photoelectrons is about 80 ps r.m.s.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Bharti Rohila, S. R. Abhilash, Diwanshu, Chetan Sharma, Devinder Mehta, Ashok Kumar
Summary: Self-supporting and Au backed Ag-107 targets have been fabricated using a combination of cold rolling and e-beam melting technique. The method is efficient, resulting in targets without significant material loss or major contamination. Various techniques have been used for thickness measurements and characterizations, and one of the fabricated targets has been successfully used in a nuclear physics experiment.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
B. Kronheim, A. Belloni, T. K. Edberg, S. C. Eno, C. Howe, C. Palmer, C. Papageorgakis, M. Paranjpe, S. Sriram
Summary: This paper presents measurements of the relative decrease of light output during irradiation of small plastic scintillator tiles read out by silicon photomultipliers. The study found substantial temporary damage during low-temperature irradiation, regardless of oxygen concentration and wrapping material. The wrapping material had an impact on the relative light loss, with the 3M(TM) Enhanced Specular Reflector Film showing the largest loss. The light loss was less at warmer temperatures and similar to that in standard atmosphere with 3% oxygen concentration. Evidence of a plateau in the radical density was seen for the data at 0 degrees C.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
V. V. Haurylavets, V. K. Ivanov, A. V. Korol, A. V. Solov'yov
Summary: Computational modeling of high-energy electron passage through crystalline media is conducted using relativistic molecular dynamics. The results show good agreement with experimental data, demonstrating the accuracy of the simulations. Minor discrepancies between theory and experiment are discussed.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Luca Quaglia, R. Cardarelli, B. Liberti, E. Pastori, G. Proto, L. Pizzimento, A. Rocchi, G. Aielli, P. Camarri, A. Di Ciacco, L. Di Stante, R. Santonico, D. Boscherini, A. Bruni, L. Massa, A. Polini, M. Romano, L. Benussi, S. Bianco, D. Piccolo, G. Saviano, M. Abbrescia, L. Congedo, M. De Serio, G. Galati, G. Pugliese, S. Simone, D. Ramos, P. Salvini, A. Samalan, M. Tytgat, N. Zaganidis, J. Eysermans, A. Ferretti, M. Gagliardi, L. Terlizzi, E. Vercellin, P. Dupieux, B. Joly, S. P. Manen, R. Guida, B. Mandelli, G. Rigoletti, M. Barroso, M. C. Arena, A. Pastore, R. Aly, M. Verzeroli, S. Buontempo
Summary: Resistive Plate Chamber detectors are widely used in current High Energy Physics experiments. However, efforts are being made to find eco-friendly gas alternatives to Tetrafluoroethane. The RPC EcoGas@GIF++ collaboration aims to improve RPC technology, evaluate the performance of RPCs with eco-friendly gas mixtures, and conduct aging tests.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
