Shocks and phase space vortices driven by a density jump between two clouds of electrons and protons

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00525017" target="_blank" >RIV/68378271:_____/20:00525017 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1088/1361-6587/ab5bfb" target="_blank" >https://doi.org/10.1088/1361-6587/ab5bfb</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6587/ab5bfb" target="_blank" >10.1088/1361-6587/ab5bfb</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Shocks and phase space vortices driven by a density jump between two clouds of electrons and protons

Popis výsledku v původním jazyce

We study with 1D PIC simulations the expansion of a dense plasma into a dilute one for density ratios 2.5„α„20. Both are unmagnetized and consist of electrons and protons. Shocks form in all cases. We determine how α affects the speed of the shock, that of the trailing velocity plateau and the proton beam instabilities in its upstream region. The speed of the velocity plateau relative to the upstream plasma increases significantly with α. Faster shocks reflect more upstream protons and fewer protons make it downstream, which slows down the shock in the downstream frame. This slow-down reduces noticably the increase with α of the shock speed in the upstream frame. All simulations demonstrate that an ion acoustic instability develops between the shock-reflected proton beam and the ambient protons.n

Název v anglickém jazyce

Shocks and phase space vortices driven by a density jump between two clouds of electrons and protons

Popis výsledku anglicky

We study with 1D PIC simulations the expansion of a dense plasma into a dilute one for density ratios 2.5„α„20. Both are unmagnetized and consist of electrons and protons. Shocks form in all cases. We determine how α affects the speed of the shock, that of the trailing velocity plateau and the proton beam instabilities in its upstream region. The speed of the velocity plateau relative to the upstream plasma increases significantly with α. Faster shocks reflect more upstream protons and fewer protons make it downstream, which slows down the shock in the downstream frame. This slow-down reduces noticably the increase with α of the shock speed in the upstream frame. All simulations demonstrate that an ion acoustic instability develops between the shock-reflected proton beam and the ambient protons.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Plasma Physics and Controlled Fusion

ISSN

0741-3335

e-ISSN

—

Svazek periodika

62

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

000530903200009

EID výsledku v databázi Scopus

2-s2.0-85081646168