Results 71 to 80 of about 166,601 (310)

Measurements and Modeling of Electron Precipitation Induced by the Ionospheric Heating Experiment

Space Weather
Through the emission of high‐frequency radio waves, ground‐based heating facilities can generate Extremely‐Low‐Frequency (ELF) and Very‐Low‐Frequency (VLF) waves in the ionosphere, a portion of which can penetrate into the Earth's radiation belts and ...
Haotian Xu, Wei Xu, Binbin Ni, Zheng Xiang, Xudong Gu, Poorya Hosseini, Zhima Zeren, Jianping Huang, Yanyan Yang, Yangxizi Liu, Taifeng Jin, Wen Cheng, Jingyuan Feng, Wenchen Ma, Yudi Pan   +14 more
doaj   +1 more source

Estimating the average energy of auroral electrons from 427.8 nm emission intensity measurements

Solar-Terrestrial Physics
We propose a method for estimating average energy of precipitating electrons from 427.8 nm emission intensity measurements. This method is based on the experimental dependence of the ratio of λ630.0 and λ427.8 nm emission intensities on the λ427.8 ...
Dashkevich Z. V., Ivanov V. E.
doaj   +1 more source

The mechanism of nanoparticle precipitation induced by electron irradiation in transmission electron microscopy [PDF]

Ultramicroscopy, 2019
Ru nanoparticles (NPs) can precipitate in Ru doped SiO2 amorphous thin films, triggered by electron irradiation in (scanning) transmission electron microscope ((S)TEM). A new mechanism was introduced to interpret the formation of metal NPs in (S)TEM. The induced electric field by electron irradiation, which originates from charging due to ionizations ...
openaire   +3 more sources

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

An extended TRANSCAR model including ionospheric convection: Simulation of EISCAT observations using input from AMIE [PDF]

, 2005
International audienceThe TRANSCAR ionospheric model was extended to account for the convection of the magnetic field lines in the auroral and polar ionosphere.
Lathuillere, C., Fontanari, J., J. Fontanari, C. Lathuillère, B. Emery, Alcaydé, D., Blelly, P.-L., Emery, B., P.-L. Blelly, D. Alcaydé, J. Lilensten, Lilensten, J.   +11 more
core   +1 more source

Secondary electron emission from meteoric smoke particles inside the polar ionosphere [PDF]

Annales Geophysicae, 2016
The charging by secondary electron emission (SEE) from particles is known as a significant charging process in astrophysical plasmas. This work aims at evaluating the significance of SEE for charging of meteoric smoke particles (MSPs) in the Earth's ...
C. Baumann, M. Rapp, M. Rapp, A. Kero
doaj   +1 more source

Characterization of Aluminized Layers on Inconel‐738 Alloy: Microstructure, Modeling of Aluminizing Kinetics, and Thermal Behavior

Advanced Engineering Materials, EarlyView.
This study explored how effective nickel aluminide coatings are obtained in providing oxidation resistance applied to the Inconel 738 alloy, modeling with diffusion models. In the present study, kinetics and thermal behavior of the Inconel 738 alloy were studied by the low‐temperature thermoreactive aluminizing process, which was carried out at 625°C ...
Gozde Celebi Efe, Tuba Yener, Suayb Cagri Yener, Mourad Keddam, Cuma Bindal   +4 more
wiley   +1 more source

Implications of Asymmetric Loss Cone Distribution on Whistler‐Driven Electron Precipitation at Mercury

Geophysical Research Letters
Mercury has a large loss cone difference in its two hemispheres due to the northward shifted magnetic dipole. The precipitation difference of energetic electrons in both hemispheres is poorly understood.
Mitsunori Ozaki, Takeru Kondo, Yuto Yamada, Satoshi Yagitani, Mitsuru Hikishima, Yoshiharu Omura   +5 more
doaj   +1 more source

Recent progress in the theoretical understanding of relativistic electron scattering and precipitation by electromagnetic ion cyclotron waves in the Earth’s inner magnetosphere

Journal of Astronomy and Space Sciences, 2019
The Earth’s outer radiation belt has long received considerable attention mainly because the MeV electron flux in the belt varies often dramatically and at various time scales.
Dae-Young Lee
doaj   +1 more source

Relativistic Electron Precipitation by EMIC Waves: Importance of Nonlinear Resonant Effects

Geophysical Research Letters, 2022
Relativistic electron losses in Earth's radiation belts are usually attributed to electron resonant scattering by electromagnetic waves. One of the most important wave modes for such scattering is the electromagnetic ion cyclotron (EMIC) mode. Within the
Veronika S. Grach, Anton V. Artemyev, Andrei G. Demekhov, Xiao‐Jia Zhang, Jacob Bortnik, Vassilis Angelopoulos, Rumi Nakamura, Ethan Tsai, Colin Wilkins, Owen W. Roberts   +9 more
doaj   +1 more source