Results 11 to 20 of about 29,138 (310)

Nonlinear physics and energetic particle transport features of the beam–plasma instability [PDF]

open access: yesJournal of Plasma Physics, 2015
In this paper we study transport features of a one-dimensional beam–plasma system in the presence of multiple resonances. As a model description of the general problem of a warm energetic particle beam, we assume $n$ cold supra-thermal beams and investigate the self-consistent evolution in the presence of the complete spectrum of nearly degenerate ...
Carlevaro, Nakia   +3 more
openaire   +2 more sources

The Beam Plasma Interactions Experiment: An Active Experiment Using Pulsed Electron Beams

open access: yesFrontiers in Astronomy and Space Sciences, 2020
The 1970s and 1980s were heydays for using active electron beam experiments to probe some of the fundamental physical processes that occur throughout the heliosphere and in astrophysical contexts.
Geoffrey D. Reeves   +15 more
doaj   +1 more source

Magnetic pinching of relativistic particle beams: a new approach to strong-field QED physics

open access: yesNew Journal of Physics, 2023
Quantum electrodynamics (QED) is a foundation of modern physics, yet access to the strong-field QED regime in the laboratory remains a formidable challenge.
Xing-Long Zhu   +8 more
doaj   +1 more source

Negative ion beam plasma characterization by retarding field energy analyzer [PDF]

open access: yes, 2022
NIO1 (Negative Ion Optimization 1) is a source of negative hydrogen beams, located at RFX facility in Padua. Its purpose is to analyze the optimal configurations for negative ion beam production and propagation.
Manaigo, Filippo
core  

Optimization-oriented modelling of neutral beam injection for EU pulsed DEMO

open access: yes, 2021
Neutral beam injection (NBI) is one of the auxiliary power systems considered for the EU DEMO pulsed plasma ('DEMO1'). In this paper, we discuss the characteristics of optimized NBI in terms of the DEMO1 requirements, relating physics and engineering ...
Varje, J.   +7 more
core   +1 more source

Simulating the impact of charge exchange on beam ions in MAST-U

open access: yes, 2022
| openaire: EC/H2020/633053/EU//EUROfusionA model for simulating charge exchange (CX) of fast ions with background atoms in magnetically confined fusion plasmas has been implemented in the ASCOT orbit-following code.
El-Haroun, H.   +10 more
core   +1 more source

Neutral particle acceleration by spatially modulated laser pulses

open access: yesNew Journal of Physics, 2023
The velocity gain of neutral particles (atoms, molecules, etc) from laser acceleration is always small. A possible scheme to obtain a high speed neutral particle beam is multistage acceleration. However, according to previous theoretical and experimental
J Y Yan, W Wang, Q Wei, P X Wang
doaj   +1 more source

Toward a plasma-based accelerator at high beam energy with high beam charge and high beam quality

open access: yesPhysical Review Accelerators and Beams, 2020
From plasma-wakefield acceleration as a physics experiment toward a plasma-based accelerator as a user facility, the beam physics issues remaining to be solved are still numerous.
P. A. P. Nghiem   +25 more
doaj   +1 more source

Physics of beam self-modulation in plasma wakefield accelerators [PDF]

open access: yesPhysics of Plasmas, 2015
The self-modulation instability is a key effect that makes possible the usage of nowadays proton beams as drivers for plasma wakefield acceleration. Development of the instability in uniform plasmas and in plasmas with a small density up-step is numerically studied with the focus at nonlinear stages of beam evolution.
openaire   +2 more sources

Nitrogen-Doped Multi-Scale Porous Carbon for High Voltage Aqueous Supercapacitors

open access: yesFrontiers in Chemistry, 2018
Recently, “Water-in-salt” electrolyte has been reported to extend the working voltage of aqueous supercapacitor. However, this electrolyte needs the electrode materials possess some good features such as proper pore structure, high electron and ion ...
Xichuan Liu   +8 more
doaj   +1 more source

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