Numerical Calculation of an Equilibrium Dust Grain Potential in Lunar Environment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10191857" target="_blank" >RIV/00216208:11320/13:10191857 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/TPS.2012.2226757" target="_blank" >http://dx.doi.org/10.1109/TPS.2012.2226757</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TPS.2012.2226757" target="_blank" >10.1109/TPS.2012.2226757</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical Calculation of an Equilibrium Dust Grain Potential in Lunar Environment

Popis výsledku v původním jazyce

The interaction of plasma particles with dust grains leads to their charging. An equilibrium grain potential depends on a plasma environment, as well as on the grain composition, size, shape, and charging history. We present results of calculations of the equilibrium potential of the grain immersed in the plasma simulating a lunar environment. In calculations, we apply a modified model of the secondary electron emission from dust grains, which takes into account grain sizes, their material, and surfaceroughness. Since this model describes the increase in the secondary emission yield caused by a finite dimension of the dust grain, the calculations provide a realistic estimation of the dust grain charge in the near-Earth environment. We show that the grain surface potential is a descending function of the grain size and this effect can even lead to opposite polarities of small and large grains.

Název v anglickém jazyce

Numerical Calculation of an Equilibrium Dust Grain Potential in Lunar Environment

Popis výsledku anglicky

The interaction of plasma particles with dust grains leads to their charging. An equilibrium grain potential depends on a plasma environment, as well as on the grain composition, size, shape, and charging history. We present results of calculations of the equilibrium potential of the grain immersed in the plasma simulating a lunar environment. In calculations, we apply a modified model of the secondary electron emission from dust grains, which takes into account grain sizes, their material, and surfaceroughness. Since this model describes the increase in the secondary emission yield caused by a finite dimension of the dust grain, the calculations provide a realistic estimation of the dust grain charge in the near-Earth environment. We show that the grain surface potential is a descending function of the grain size and this effect can even lead to opposite polarities of small and large grains.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

IEEE Transactions on Plasma Science

ISSN

0093-3813

e-ISSN

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Svazek periodika

41

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

740-744

Kód UT WoS článku

000317922000003

EID výsledku v databázi Scopus

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