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Alexey Arefiev
Researcher at University of California, San Diego
Publications - 156
Citations - 3362
Alexey Arefiev is an academic researcher from University of California, San Diego. The author has contributed to research in topics: Electron & Laser. The author has an hindex of 31, co-authored 147 publications receiving 2803 citations. Previous affiliations of Alexey Arefiev include University of Texas at Austin.
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Enhanced Multi-MeV Photon Emission by a Laser-Driven Electron Beam in a Self-Generated Magnetic Field
TL;DR: Numerical simulations are used to demonstrate that a source of collimated multi-MeV photons with high conversion efficiency can be achieved using an all-optical single beam setup at an intensity of 5×10^{22} W/cm^{2} that is already within reach of existing laser facilities.
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Magnetohydrodynamic scenario of plasma detachment in a magnetic nozzle
Alexey Arefiev,Boris Breizman +1 more
TL;DR: In this article, the authors present a magnetohydrodynamic (MHD) detachment scenario in which the plasma flow stretches the magnetic field lines to infinity, and a solution exhibits a well-behaved transition from sub- to super-Alfvenic flow inside the nozzle and a rarefaction wave at the edge of the outgoing flow.
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Ultrashort Pulsed Neutron Source
Ishay Pomerantz,E. McCary,Alexander R. Meadows,Alexey Arefiev,Aaron C Bernstein,C. Chester,José René Fuentes Cortez,Michael E Donovan,Gilliss Dyer,Erhard Gaul,David Hamilton,Donghoon Kuk,A. C. Lestrade,Chun-Yuan Wang,Todd Ditmire,Bjorn Hegelich +15 more
TL;DR: This work reports on a novel compact laser-driven neutron source with an unprecedented short pulse duration and high peak flux, an order of magnitude higher than any existing source, that opens venues for enhancing neutron radiography contrast and for creating astrophysical conditions of heavy element synthesis in the laboratory.
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Generating “Superponderomotive” Electrons due to a Non-Wake-Field Interaction between a Laser Pulse and a Longitudinal Electric Field
TL;DR: 2D particle-in-cell simulations of a relatively simple laser-plasma interaction indicate that the generation of superponderomotive electrons is strongly affected by this "antidephasing" mechanism.
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Theoretical components of the VASIMR plasma propulsion concept
Alexey Arefiev,Boris Breizman +1 more
TL;DR: The ongoing development of the Variable Specific Impulse Magnetoplasma Rocket (VASIMR) involves basic physics analysis of its three major components: helicon plasma source, ion cyclotron-resonance heating module, and magnetic nozzle as mentioned in this paper.