Results 41 to 50 of about 85,932 (298)

High Bubble Grade After Diving: The Role of the Blood Pressure Regimen

open access: yesFrontiers in Physiology, 2019
Introduction: Previous studies have suggested that the circulatory system was involved in the production of circulatory bubbles after diving. This study was designed to research the cardio-vascular function characteristics related to the production of ...
Alain Boussuges   +5 more
doaj   +1 more source

An exploration on electron bunching of ionization induced self-injection in laser wakefield accelerators [PDF]

open access: yes, 2017
Plasma-based wakefield accelerator is attractive for generating quasi-monoenergetic electron beams using the bubble regime. The bubble is formed by an intense driver, which propagates through the plasma and expels all electrons transversely, creating a ...
Li, Deyun, M.A.
core   +1 more source

Dynamic behaviour of cavitation bubble close to a flexible wall [PDF]

open access: yesEPJ Web of Conferences, 2022
The dynamic behaviour of cavitation bubble close to a flexible boundary is investigated experimentally. The cavitation bubble is produced as a consequence of an optical breakdown generated by the focus of 532 nm Nd-Yag laser beam.
Müller Miloš   +2 more
doaj   +1 more source

Bubble regime of plasma wakefield in 2D and 3D geometries

open access: yes, 2018
Considering the popularity of two-dimensional particle-in-cell simulations, a 2D model of plasma wakefield in the strongly nonlinear (bubble) regime in transversely non-uniform plasma is developed.
Golovanov, A. A., Kostyukov, I. Yu.
core   +1 more source

Multipoint observations of equatorial plasma bubbles [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2003
This paper compares evening sector measurements by the Jicamarca unattended long‐term studies of the ionosphere and atmosphere (JULIA) radar, the Ancon scintillation monitor, and plasma density sensors on Defense Meteorological Satellite Program (DMSP) satellites. During more than half of the 110 nights of JULIA operations in 1998 and 1999, backscatter
W. J. Burke   +5 more
openaire   +2 more sources

Field-reversed bubble in deep plasma channels for high quality electron acceleration

open access: yes, 2014
We study hollow plasma channels with smooth boundaries for laser-driven electron acceleration in the bubble regime. Contrary to the uniform plasma case, the laser forms no optical shock and no etching at the front.
Jansen, O.   +4 more
core   +1 more source

The Fermi Bubble as a Source of Cosmic Rays in the Energy Range > 10E15 eV [PDF]

open access: yes, 2011
The {\it Fermi} Large Area Telescope has recently discovered two giant gamma-ray bubbles which extend north and south of the Galactic center with diameters and heights of the order of $H\sim 10$ kpc. We suggest that the periodic star capture processes by
Abdo   +71 more
core   +2 more sources

Plasma Production in Isolated Bubbles

open access: yesIEEE Transactions on Plasma Science, 2014
The production of plasma in isolated (i.e., unattached to a physical electrode) air bubbles in liquid water is investigated. Bubble size along with bubble position relative to the pulsed high voltage electrode is considered.
Sarah N. Gucker   +2 more
openaire   +1 more source

Do Stops Slow Down Electroweak Bubble Walls? [PDF]

open access: yes, 2001
We compute the wall velocity in the MSSM. We therefore generalize the SM equations of motion for bubble walls moving through a hot plasma at the electroweak phase transition and calculate the friction terms which describe the viscosity of the plasma.
John, P., Schmidt, M. G.
core   +5 more sources

On the Upwelling of the F Layer Base and Prediction of Equatorial Plasma Bubble

open access: yesGeophysical Research Letters, 2023
Prediction of equatorial plasma bubbles (EPBs) continues to be a challenge for the scientific community. We present a novel data analysis approach, employed on the collocated radar and ionosonde observations from Gadanki, providing new experimental ...
A. K. Patra, S. K. Das
doaj   +1 more source

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