Article
Geosciences, Multidisciplinary
Satoshi Kasahara, Ryo Tao, Emiko Yoshida, Shoichiro Yokota
Summary: In situ measurement of charged particles is crucial for understanding space plasma physics. Existing energy analyzers have a limited field of view, but a novel deflection system has been proposed to extend the energy coverage and enable full angular scan, particularly for observing plasma with anisotropic energetic particles at high energy levels (>10 keV).
EARTH PLANETS AND SPACE
(2023)
Article
Astronomy & Astrophysics
Zh T. Kambarova, A. O. Saulebekov, A. A. Trubitsyn
Summary: This paper introduces the main instrument for analyzing processes in cosmic plasma, and proposes a novel analyzer design, which has been calculated and modeled. Research shows that this new analyzer can provide more accurate plasma characteristic information in a shorter time.
ASTRONOMICAL JOURNAL
(2022)
Article
Chemistry, Physical
P. Nica, C. Ursu, C. Focsa
Summary: This study investigated the vacuum expansion of a transient carbon plasma produced by KrF excimer laser, and found a significant increase in the production of C2+ and C1+ fast ions with higher laser pulse energy. The slower singly charged ions in the thermal plasma part were less affected by the irradiation conditions.
APPLIED SURFACE SCIENCE
(2021)
Article
Astronomy & Astrophysics
Masafumi Hirahara, Tomomi Takei, Shoichiro Yokota, Tomoki Yanagimachi
Summary: The space plasma physics communities worldwide are conducting intensive research to miniaturize instruments for installation on micro/small satellites and CubeSats in space exploration missions. Recently, a novel space plasma instrument was designed capable of simultaneous energy analyses of low-energy electrons and ions with a single sensor head. The instrument features a triple-dome analyzer and triple-layer collimator to cover a 360-degree field-of-view. The performance of the instrument was validated through experimental tests and showed good agreement with numerical design results.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2023)
Article
Astronomy & Astrophysics
K. G. Hanley, J. P. McFadden, D. L. Mitchell, C. M. Fowler, S. W. Stone, R. Yelle, M. Mayyasi, R. E. Ergun, L. Andersson, M. Benna, M. K. Elrod, B. M. Jakosky
Summary: In this study, temperatures of O-2(+) in Mars' ionosphere were measured successfully using data from the MAVEN spacecraft. It was found that ions were more than 100K hotter than neutrals during the day, contrary to the expected temperature convergence between ions and neutrals. Further investigation is needed to understand the source of energy maintaining the high ion temperatures.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2021)
Article
Astronomy & Astrophysics
J. A. Melendez, C. Drischler, A. J. Garcia, R. J. Furnstahl, Xilin Zhang
Summary: The article presents a fast and accurate emulator for two-body scattering observables, which combines Newton's variational method with ideas from eigenvector continuation. The emulator is shown to accurately extrapolate far from the support of the training data, providing significant improvement in CPU time when used to emulate interactions with multiple free parameters.
Article
Optics
Bei Chen, Lianghao Su, Zhaoyang Zhang, Xiaozhi Liu, Tingge Dai, Muping Song, Hui Yu, Yuehai Wang, Jianyi Yang
Summary: The paper introduces a novel wavelet convolutional neural network (WNN) for temperature measurement in a Brillouin optical time domain reflectometry (BOTDR) system, which combines a one-dimensional convolutional neural network and a self-adaptive wavelet neural network. The WNN shows better robustness and flexibility compared to other techniques, providing a feasible and faster solution for temperature measurement.
Article
Thermodynamics
Byrenn Birch, David Buttsworth, Stefan Loehle, Fabian Hufgard
Summary: A fast response heat transfer gauge was developed to measure heat flux distribution and fluctuations in a supersonic arcjet plasma wind tunnel. By utilizing a non-dimensional impulse response identified through pulsed optical power deposition, along with reference measurements, the distribution and fluctuations in heat flux were successfully determined. Measurements revealed a gaussian-like heat flux distribution with fluctuations near the nozzle centerline, providing significant productivity gains compared to traditional calorimeter-based methods.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Physics, Fluids & Plasmas
Jianxun Su, Baonian Wan, Juan Huang, Birgitte Madsen, Mirko Salewski, Yanxu Sun, Jinfang Wang, Jing Fu, Jiafeng Chang, Chengrui Wu, Lizhen Liang, Yingjie Chen, Guoqiang Zhong, Haiqing Liu, Qing Zang, Yingying Li, Bo Lyu, Jinping Qian, Xianzu Gong
Summary: By combining data from two different views, the velocity-space distributions of fast ions on EAST have been reconstructed more accurately, with further studies planned to enhance the reliability of FIDA-based reconstructions in the future based on real multi-view measurements on EAST.
PLASMA SCIENCE & TECHNOLOGY
(2021)
Article
Meteorology & Atmospheric Sciences
Jiaoshi Zhang, Yang Wang, Steven Spielman, Susanne Hering, Jian Wang
Summary: Aerosol hygroscopic growth is important in atmospheric particle chemistry and climate. Nonparametric, regularized methods are introduced to invert the aerosol GF-PDF and are demonstrated to outperform other inversion methods in reconstructing the GF-PDF.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2022)
Article
Environmental Sciences
Jun Geng, Gang Yuan, J. M. Chen, Chunguang Lyu, Lili Tu, Weiliang Fan, Qingjiu Tian, Zhaofu Wu, Tingye Tao, Min Yu, Yongchao Zhu, Jianwei Huang, Kaijian Xu, Jinchao Li, Shaoteng Wang
Summary: The study shows that the error in LAI measured by PCA is mainly caused by the weight coefficient of the last PCA ring. The error is closely related to leaf inclination angles (IAs) and can be influenced by the number of PCA rings or VZAs used.
Article
Materials Science, Coatings & Films
Jian-quan Li, Qing-he Zhang, Zan-yang Xing, Wen-qi Lu
Summary: The emissive probe technique and cold Langmuir probe technique were compared for measuring plasma potential in microwave electron cyclotron resonance plasmas. It was found that the results obtained from the hot emissive probe were more reliable compared to the cold Langmuir probe.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2022)
Article
Geochemistry & Geophysics
Haokui Zhang, Chengrong Gong, Yunpeng Bai, Zongwen Bai, Ying Li
Summary: This paper introduces a 3-D asymmetric neural architecture search algorithm for HSI classification, enhancing both performance and speed; addressing issues in HSI classification, a pixel-to-pixel classification framework is proposed to reduce cost and eliminate repetitive operations.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Neurosciences
Kathryne M. Allen, Jennifer Lawlor, Angeles Salles, Cynthia F. Moss
Summary: The study explores comparative work on mammalian superior colliculus and non-mammalian optic tectum, highlighting the role of the SC in multisensory integration and motor initiation.
Emphasis is placed on recent studies that consider ethological context and natural behaviors, advancing knowledge of the SC as a site of sensory processing and motor control in diverse species.
CURRENT OPINION IN NEUROBIOLOGY
(2021)
Article
Engineering, Aerospace
Masafumi Hirahara, Seishiro Tanaka, Hinako Kataoka, Satoshi Kasahara, Shin Kubo
Summary: New instrumental developments based on a floating-mode avalanche photodiode (APD) combined with an electrostatic energy-per-charge analyzer were conducted for comprehensive and accurate plasma measurements in wide energy ranges in future space plasma explorations.
ADVANCES IN SPACE RESEARCH
(2023)