Results 91 to 100 of about 13,240 (212)

Ring current ion scattering by electromagnetic ion cyclotron waves: nonlinear resonance effects

Journal of Geophysical Research: Space Physics
Abstract Electromagnetic ion cyclotron (EMIC) waves can interact with ring current ions and scatter them into the atmosphere. The classical framework for studying EMIC wave–ion interaction is the quasi‐linear theory, which relies on the approximation of weak perturbations of particle trajectories for a single resonant interaction ...
Xiaofei Shi, Vassilis Angelopoulos, Qianli Ma   +2 more
openaire   +1 more source

Measuring blood–brain barrier dysfunction: a critical appraisal of fluid biomarkers, in vitro models, in vivo imaging, and post‐mortem approaches

Alzheimer's &Dementia, Volume 22, Issue 3, March 2026.
Abstract The blood–brain barrier (BBB) maintains central nervous system homeostasis by regulating molecular exchange between blood and brain. BBB dysfunction is associated with aging and neurological disorders such as Alzheimer's disease, stroke, and multiple sclerosis.
Shakira A. van der Panne, Helena Durrant, Jannis F. Heuer, Ivana Kancheva, Arno Stellingwerf, Lieuwe T. K. M. Verkaar, Damon Verstappen, Pascalle Mossel, Walter H. Backes, Erik N. T. P. Bakker, Jurgen A. H. R. Claassen, Marcel M. Verbeek, Louise van der Weerd, Matthias J. P. van Osch, Helga E. de Vries   +14 more
wiley   +1 more source

Low frequency waves in HF heating of the mid-latitude ionosphere [PDF]

, 2015
The heating of the ionsosphere by high frequency (HF) radio waves leads to plasma processes with a wide range of scales. In the high-latitude ionosphere, extensive studies using numerical simulations using a Hall-magnetohydrodynamic model and experiments
Eliasson, Bengt, Milikh, Gennady, Papadopoulos, Dennis, Shao, Xi, Sharma, Surja   +4 more
core  

Next‐Generation Electron Linear Accelerators for Compact Accelerator‐Driven Neutron Sources

Engineering Reports, Volume 8, Issue 3, March 2026.
High‐gradient electron linear accelerators (linacs) enable cost‐effective, high‐performance compact accelerator‐driven neutron sources (CANSs) for industrial applications. Comparing with existing CANS, we show that high‐gradient linacs open a previously unexplored region of the CANS landscape, enabling accessible stress diffractometry with competitive ...
L. M. Wroe, J. Olivares‐Herrador, W. Wuensch, A. Latina, S. Stapnes   +4 more
wiley   +1 more source

Weak turbulence theory of the non-linear evolution of the ion ring distribution

, 2011
The nonlinear evolution of an ion ring instability in a low-beta magnetospheric plasma is considered. The evolution of the two-dimensional ring distribution is essentially quasilinear.
C. Crabtree, Davidson R., G. Ganguli, L. Rudakov, Lominadze D. G., M. Mithaiwala, Sagdeev R. Z., Stix T. H.   +7 more
core   +1 more source

First Coincident Radar and Optical Observations of a Meteor Radio Afterglow

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract It has been hypothesized that Meteor Radio Afterglows (MRAs) occur due to resonant transition radiation (RTR) where suprathermal electrons emit as they pass through electron density inhomogeneities in a turbulent plasma. Meteor trails are thought to produce suprathermal electrons through anion oxidation, which can be identified through meteor ...
K. S. Obenberger, J. L. Chau, J. Vierinen, D. Vida, L. E. Cordonnier, Z. Balint, M. Clahsen, E. Dao, J. Dowell, J. M. Holmes, R. F. Kelly, D. Kastinen, N. Pfeffer, K. Robinson, G. B. Taylor, J. M. Urco   +15 more
wiley   +1 more source

Full‐wave modeling of EMIC waves near the He+ gyrofrequency

Geophysical Research Letters, 2016
Electromagnetic ion cyclotron (EMIC) waves are known to be excited by the cyclotron instability associated with hot and anisotropic ion distributions in the equatorial region of the magnetosphere and are thought to play a key role in radiation belt ...
Eun‐Hwa Kim, Jay R. Johnson
doaj   +1 more source

MMS Observation of Trapping of Electrons by Chorus Waves Inside a Magnetic Hole

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract We present an event of chorus waves embedded within a magnetic hole (MH) in the Earth's magnetosheath, observed by the Magnetospheric Multi‐Scale (MMS) mission on 1 March 2016. Unlike conventional cases where chorus waves are typically detected near the center of a magnetic depression, in this event lower‐band chorus waves appear predominantly
Krushna C. Barik, Yoshiharu Omura, Satyavir Singh   +2 more
wiley   +1 more source

Precursor Wave Emission Enhanced by Weibel Instability in Relativistic Shocks

, 2018
We investigated the precursor wave emission efficiency in magnetized purely perpendicular relativistic shocks in pair plasmas. We extended our previous study to include the dependence of upstream magnetic field orientations.
Amano, Takanobu, Hoshino, Masahiro, Iwamoto, Masanori, Matsumoto, Yosuke   +3 more
core   +1 more source

Recent observations of electromagnetic ion cyclotron waves in space

Advances in Space Research, 1996
In the past ten years observations of electromagnetic ion cyclotron (EMIC) waves in space have been reported which have greatly increased our understanding of the occurrence distribution and dynamics of Pc 1 waves in the magnetosphere. The most prominent site of EMIC wave activity is now known to be the dayside outer magnetosphere.
openaire   +1 more source