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%2F12%3A10133184" target="_blank" >RIV/00216208:11320/12:10133184 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.mff.cuni.cz/veda/konference/wds/proc/pdf12/WDS12_227_f2_Vaverka.pdf" target="_blank" >http://www.mff.cuni.cz/veda/konference/wds/proc/pdf12/WDS12_227_f2_Vaverka.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Numerical Calculation of an Equilibrium Dust Grain Potential in Lunar Environment

Popis výsledku v původním jazyce

Dust coexists with plasma of various parameters in space as well as in laboratories and industrial facilities. The mutual interaction of plasma particles with dust grains leads to their charging. An equilibrium grain potential depends on plasma environment as well as on the grain composition, size, shape, and history. A precise estimation of an equilibrium grain potential in a specific plasma environment can be thus complicated. We present results of a new numerical method for calculation of an equilibrium potential of the grain immersed in the plasma simulating a lunar environment where an influence of secondary electron emission by energetic electrons increases during the Earth plasma sheet crossings. In calculations, we apply a modified model of secondary electron emission for dust grains which takes into account an influence of grain size, material, and surface roughness. Since this model describes the increase of the secondary emission yield caused by a finite dimension of the dus

Název v anglickém jazyce

Numerical Calculation of an Equilibrium Dust Grain Potential in Lunar Environment

Popis výsledku anglicky

Dust coexists with plasma of various parameters in space as well as in laboratories and industrial facilities. The mutual interaction of plasma particles with dust grains leads to their charging. An equilibrium grain potential depends on plasma environment as well as on the grain composition, size, shape, and history. A precise estimation of an equilibrium grain potential in a specific plasma environment can be thus complicated. We present results of a new numerical method for calculation of an equilibrium potential of the grain immersed in the plasma simulating a lunar environment where an influence of secondary electron emission by energetic electrons increases during the Earth plasma sheet crossings. In calculations, we apply a modified model of secondary electron emission for dust grains which takes into account an influence of grain size, material, and surface roughness. Since this model describes the increase of the secondary emission yield caused by a finite dimension of the dus

Druh

D - Stať ve sborníku

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

WDS'12 Proceedings of Contributed Papers: Part II - Physics of Plasmas and Ionized Media

ISBN

978-80-7378-225-2

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

156-162

Název nakladatele

Matfyzpress

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

29. 5. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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