Article
Engineering, Multidisciplinary
Yu. M. Yarmoshenko, I. E. Kantur, V. E. Dolgikh, T. V. Kuznetsova
Summary: An X-ray image registration system consisting of a detector, optical lens, and digital video camera was developed. The system successfully obtained K-spectra images of Ca, Ti, Mn, Fe, and Co using an X-ray fluorescence spectrometer. Different detectors and video cameras were used with high speed and acceptable statistics. The spectrum measurement was duplicated on a one-dimensional position detector.
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES
(2023)
Review
Physics, Multidisciplinary
E. V. Pagano, E. De Filippo, P. Russotto, G. Cardella, A. Castoldi, E. Geraci, B. Gnoffo, C. Guazzoni, G. Lanzalone, C. Maiolino, N. S. Martorana, A. Pagano, S. Pirrone, G. Politi, F. Risitano, F. Rizzo, M. Trimarchi
Summary: Proper detection of neutrons and charged particles is crucial for advancing our understanding of nuclear spectroscopy, reaction dynamics, and astrophysical objects. This work provides a brief overview of the Neutron Array for Correlation Studies (NArCoS), a state-of-the-art hodoscope under construction in Catania (INFN), which aims to improve neutron detection capabilities.
FRONTIERS IN PHYSICS
(2023)
Article
Instruments & Instrumentation
Shubhadeep Biswas, Lokesh C. Tribedi
Summary: The development and performance of a recoil ion momentum spectrometer and a post-collision projectile charge state analyzer for studying molecular fragmentation processes were demonstrated. Experimental studies on fragmentation channels following different ionization events were conducted, with a focus on momentum and kinetic energy release distributions. The results were compared with theoretical calculations and high resolution experiments to determine branching ratios of the fragmentation channels.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Chemistry, Inorganic & Nuclear
C-H Lee, J. Seon
Summary: An improved method for energy calibration of particle detectors is presented in this study, which utilizes both the discrete and continuous spectra from the conversion electrons and beta particles of a radioisotope of Cs-137. By fitting model functions to the measurements, the instrument response, energy scale, and energy resolution can be derived, including determination of the DC-offset and non-linearity of the instrument. This method provides a broader energy range for calibration compared to conventional methods.
APPLIED RADIATION AND ISOTOPES
(2021)
Article
Engineering, Aerospace
Hoonkyu Seo, Yuchul Shin, Ju Woo, Woohyung Seol, Chaean Lee, Chanhaeng Lee, Hyunsang Lee, Jongho Seon, Jongdae Sohn, Kyoungwook Min, Kwangsun Ryu, Goohwan Shin, Jangsoo Chae, Craig S. Tindall, Davin E. Larson, John Sample
Summary: This paper discusses the development and early operation of a space-borne instrument capable of measuring and identifying charged particles and neutrals in the energy range of 20-400 keV. The instrument uses electric fields to deflect and distinguish particles, and has demonstrated successful performance capabilities through laboratory tests and numerical simulations.
ADVANCES IN SPACE RESEARCH
(2021)
Article
Engineering, Biomedical
Joaquim G. Sanctorum, Sam Van Wassenbergh, Van Nguyen, Jan De Beenhouwer, Jan Sijbers, Joris J. J. Dirckx
Summary: In computed X-ray tomography, the limited size of detectors can be addressed by using redundancy weighting to increase the effective field of view and diameter of the reconstructed volume. By incorporating a relaxation parameter, the convergence rate of the reconstruction algorithm can be accelerated, thus reducing computation time while maintaining results. The experiments using this method showed significant improvement in effective FOV and demonstrated applicability to different types of detectors.
PHYSICS IN MEDICINE AND BIOLOGY
(2021)
Article
Engineering, Ocean
Zishun Yao, Bruce Melville, Dawei Guan, Asaad Shamseldin, Colin Whittaker, Jinhai Zheng
Summary: In order to study the dynamics of sand behavior around vibrating monopile foundations of offshore wind turbines, researchers often use flat plates as representations to conduct two-dimensional experiments. Previous studies have found that under dry conditions, sand exhibits convective and subsidence motions. However, it is still unclear whether the same motions occur under saturated conditions and if there are any differences between dry and saturated conditions. Therefore, this study presents a simplified two-dimensional experiment to further investigate the characteristics of sand motions under dry and saturated conditions. The experimental results indicate that the compacted sand surrounding the structure reduces the vibration amplitude of the monopile. Additionally, the vibration amplitudes are more significantly attenuated under saturated conditions compared to dry conditions. Moreover, the convective motions of sand under saturated conditions are weaker than those under dry conditions, suggesting that the viscous dissipation effect may weaken the convective motions around the vibrating monopile foundations.
APPLIED OCEAN RESEARCH
(2023)
Article
Thermodynamics
Ram Prakash Sharma, J. K. Madhukesh, Sunendra Shukla, Fehmi Gamaoun, B. C. Prasannakumara
Summary: This study investigates the flow of a ternary liquid between two parallel porous plates in a microchannel to explore innovative methods for enhancing heat transfer effectiveness. The findings show that as the velocity and thermal profiles decrease, the mass and thermal energy distribution rates also decrease. These discoveries have significant implications for the design and optimization of microfluidic devices and thermal exchangers.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Engineering, Chemical
Zhichao Wang, Hongping Yu, Achini Liyanage, Junjie Qiu, Dilantha Thushara, Bo Bao, Shuangliang Zhao
Summary: This study demonstrates the controllable manipulation of nanoparticle diffusion in microchannels through external electric fields, which has the potential for applications in separation and delivery. The collective diffusion coefficient of nanoparticles under electric fields shows significant deviation from the molecular collective diffusion coefficient.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Engineering, Mechanical
Yuankun Sun, Jiasong Wang, Zhongming Hu, Ke Lin, Dixia Fan
Summary: This study investigates the flow-induced vibration of a circular cylinder equipped with a rear rigid splitter plate, focusing on the transition from vortex-induced vibration (VIV) to galloping. The results show the dependence of oscillation characteristics, vortex evolution, force coefficients, mean added mass, and effective added mass on the length of the splitter plate. Five oscillation patterns are identified, with severe galloping observed at high reduced velocities for specific plate lengths. The competition between vortex shedding and free shear layers attachment plays a crucial role in the transition from VIV to galloping.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Astronomy & Astrophysics
R. Battiston, C. Neubuser, F. M. Follega, R. Iuppa, V. Vitale, R. Ammendola, D. Badoni, S. Bartocci, A. Bazzano, S. Beole, I. Bertello, W. J. Burger, D. Campana, A. Cicone, P. Cipollone, S. Coli, L. Conti, A. Contin, M. Cristoforetti, G. D'Angelo, F. De Angelis, C. De Donato, C. De Santis, P. Diego, A. Di Luca, E. Fiorenza, G. Gebbia, A. Lega, M. Lolli, B. Martino, M. Martucci, G. Masciantonio, M. Merge, M. Mese, A. Morbidini, F. Nuccilli, F. Nozzoli, A. Oliva, G. Osteria, E. Papini, F. Palma, F. Palmonari, A. Parmentier, B. Panico, S. Perciballi, F. Perfetto, A. Perinelli, P. Picozza, M. Piersanti, M. Pozzato, G. Rebustini, D. Recchiuti, E. Ricci, M. Ricci, J. Rodi, A. Russi, S. B. Ricciarini, Z. Sahnoun, U. Savino, V. Scotti, X. Shen, A. Sotgiu, R. Sparvoli, S. Tofani, P. Ubertini, N. Vertolli, V. Vilona, U. Zannoni, Z. Zeren, S. Zoffoli, P. Zuccon
Summary: High-energy, long gamma-ray bursts (GRBs) can be exceptionally bright when they happen in the close-by universe, such as the recent GRB221009A with a redshift of 0.152. This event, observed by many gamma-ray space experiments, was accompanied by sudden electron flux changes measured by the HEPP-L charged particle detector on a satellite orbiting over Europe. The observed electron flux closely matched the time dependence of the photon flux associated with the main emission of the GRB.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Instruments & Instrumentation
S. Sweany, W. G. Lynch, K. Brown, A. Anthony, Z. Chajecki, D. Dell'Aquila, P. Morfouace, F. C. E. Teh, C. Y. Tsang, M. B. Tsang, R. S. Wang, K. Zhu
Summary: Efficient detection of energetic light charged particles often involves using arrays of energy-loss telescopes with two or more layers of detection media. This study develops a method for measuring corrections and determines reaction and out-scattering losses for silicon-CsI(Tl) telescopes of the newly developed HiRA10 array, with extracted efficiencies in good agreement with model predictions.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2021)
Article
Engineering, Mechanical
Peng Zhang, Yichen Guo, Maurizio Porfiri
Summary: This study proposes an experimental framework to investigate the dynamic response of sandwich composites to impulsive hydrodynamic loading. The interaction between a fiber-reinforced plate and water at the air-water interface is studied using particle image velocimetry (PIV) and digital image correlation (DIC) visualization techniques. Velocity and pressure fields are quantified through PIV, while the out-of-plane vibration of the plate is inferred from DIC. The experiments reveal a multimodal response related to the flow physics.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2023)
Article
Thermodynamics
Joshua M. Herzog, Dustin Witkowski, David A. Rothamer
Summary: Aerosol phosphor thermometry (APT) is a promising temperature-imaging diagnostic being developed for combustion applications. This study shows that certain phosphors in APT can perform temperature imaging above 1000 K, up to at least 1400 K, with a single-shot precision of 20-K. This advancement allows APT to be applied in combustion environments to study issues such as low-temperature ignition in engines.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2021)
Article
Nuclear Science & Technology
Hong-Yu Zhu, Jian-Ling Lou, Yan-Lin Ye, Li-Sheng Yang, Bo-Long Xia, Kang Wei, Ying Chen, Wei-Liang Pu, Zi-Yao Hu, Hao-Yu Ge, Jia-Hao Chen, Kai Ma, Wen-Wu Wan, Hooi-Jin Ong, Yan-Yun Yang, Shi-Wei Xu, Kang Wang, Fang-Fang Duan, Jun-Bin Ma, Zhen Bai, Peng Ma, Ruo-Fu Chen
Summary: In this study, two annular detector arrays comprising 24 wedge-shaped CsI(Tl) crystals were constructed and tested. The use of an 80-mu m-thick ESR film to encapsulate the CsI(Tl) crystal resulted in the largest light output and the smallest non-uniformity. The annular Si-CsI(Tl) telescopes successfully discriminated Z = 1 and Z = 2 charged particles in a direct nuclear reaction experiment.
NUCLEAR SCIENCE AND TECHNIQUES
(2023)
Article
Astronomy & Astrophysics
Jun Liang, B. Yang, E. Donovan, J. Burchill, D. Knudsen
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2017)
Article
Astronomy & Astrophysics
W. E. Archer, D. J. Knudsen, J. K. Burchill, B. Jackel, E. Donovan, M. Connors, L. Juusola
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2017)
Article
Astronomy & Astrophysics
Jaeheung Park, Hermann Luehr, David J. Knudsen, Jonathan K. Burchill, Young-Sil Kwak
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2017)
Article
Astronomy & Astrophysics
D. J. Knudsen, J. K. Burchill, S. C. Buchert, A. I. Eriksson, R. Gill, J. -E. Wahlund, L. Ahlen, M. Smith, B. Moffat
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2017)
Article
Astronomy & Astrophysics
J. Wu, D. J. Knudsen, D. M. Gillies, E. F. Donovan, J. K. Burchill
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2017)
Article
Geosciences, Multidisciplinary
D. M. Miles, I. R. Mann, I. P. Pakhotin, J. K. Burchill, A. D. Howarth, D. J. Knudsen, R. L. Lysak, D. D. Wallis, L. L. Cogger, A. W. Yau
GEOPHYSICAL RESEARCH LETTERS
(2018)
Article
Astronomy & Astrophysics
Levan Lomidze, David J. Knudsen, Johnathan Burchill, Alexei Kouznetsov, Stephan C. Buchert
Article
Astronomy & Astrophysics
Yangyang Shen, David J. Knudsen, Johnathan K. Burchill, Andrew D. Howarth, Andrew W. Yau, David M. Miles, H. Gordon James, Gareth W. Perry, Leroy Cogger
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2018)
Article
Astronomy & Astrophysics
Levan Lomidze, Johnathan K. Burchill, David J. Knudsen, Alexei Kouznetsov, Daniel R. Weimer
EARTH AND SPACE SCIENCE
(2019)
Article
Astronomy & Astrophysics
A. Koustov, D. B. Lavoie, A. F. Kouznetsov, J. K. Burchill, D. J. Knudsen, R. A. D. Fiori
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2019)
Article
Astronomy & Astrophysics
Jun Liang, Y. Shen, D. Knudsen, E. Spanswick, J. Burchill, E. Donovan
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2019)
Article
Physics, Fluids & Plasmas
Pedro Alberto Resendiz Lira, Richard Marchand, Johnathan Burchill, Matthias Foerster
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2019)
Article
Astronomy & Astrophysics
J. Wu, D. J. Knudsen, D. M. Gillies, J. K. Burchill
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2020)
Article
Astronomy & Astrophysics
I. P. Pakhotin, I. R. Mann, D. J. Knudsen, R. L. Lysak, J. K. Burchill
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2020)
Article
Multidisciplinary Sciences
I. P. Pakhotin, I. R. Mann, K. Xie, J. K. Burchill, D. J. Knudsen
Summary: The study found that the offset of the magnetic dipole on Earth causes a seasonal asymmetric electromagnetic energy input to the Northern Hemisphere, which may also exist on other planets.
NATURE COMMUNICATIONS
(2021)