Failed self-reformation of a sub-critical fast magnetosonic shock in collisionless plasma

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00521649" target="_blank" >RIV/68378271:_____/19:00521649 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1088/2516-1067/ab30ba" target="_blank" >https://doi.org/10.1088/2516-1067/ab30ba</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/2516-1067/ab30ba" target="_blank" >10.1088/2516-1067/ab30ba</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Failed self-reformation of a sub-critical fast magnetosonic shock in collisionless plasma

Popis výsledku v původním jazyce

We study with a 1D particle-in-cell (PIC) simulation the evolution of a subcritical perpendicular fast magnetosonic shock. The shock propagates at 1.5 times the fast magnetosonic speed. Some upstream protons are reflected by the shock's electric potential. They form a beam which carries less energy than those that are reflected magnetically by super-critical shocks. The beam triggers the growth of a fast magnetosonic solitary wave upstream of the shock, which reflects the beam protons back to the shock. Extracting the momentum and energy of this beam allows the solitary wave to grow into a proto-shock that is trailed by a short downstream region. Protons from the shock-reflected proton beam increase the density of the plasma between the shock and the proto-shock reducing its potential difference relative to both surrounding structures. Bulk protons, which cross the proto-shock, react to the decreased potential jump. The plasma behind the proto-shock accelerates and so does the shock.n

Název v anglickém jazyce

Failed self-reformation of a sub-critical fast magnetosonic shock in collisionless plasma

Popis výsledku anglicky

We study with a 1D particle-in-cell (PIC) simulation the evolution of a subcritical perpendicular fast magnetosonic shock. The shock propagates at 1.5 times the fast magnetosonic speed. Some upstream protons are reflected by the shock's electric potential. They form a beam which carries less energy than those that are reflected magnetically by super-critical shocks. The beam triggers the growth of a fast magnetosonic solitary wave upstream of the shock, which reflects the beam protons back to the shock. Extracting the momentum and energy of this beam allows the solitary wave to grow into a proto-shock that is trailed by a short downstream region. Protons from the shock-reflected proton beam increase the density of the plasma between the shock and the proto-shock reducing its potential difference relative to both surrounding structures. Bulk protons, which cross the proto-shock, react to the decreased potential jump. The plasma behind the proto-shock accelerates and so does the shock.n

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/EF16_013%2F0001793" target="_blank" >EF16_013/0001793: Pokročilé simulační nástroje pro ELI Beamlines</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Plasma Research Express

ISSN

2516-1067

e-ISSN

—

Svazek periodika

1

Číslo periodika v rámci svazku

Jul

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

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EID výsledku v databázi Scopus

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