izpis_h1_title_alt

Thermodynamic plasma properties near the sheath edge in kinetic Tonks-Langmuir model with finite ion source temperatures
Jelić, Nikola (Avtor), Kos, Leon (Avtor), Duhovnik, Jože (Avtor)

URLURL - Predstavitvena datoteka, za dostop obiščite http://www.np.ac.rs/index.php/en/preuzimanjasve/vol3-br2/206-thermodynamic-plasma-properties-near-the-sheath-edge-in/download Povezava se odpre v novem oknu

Izvleček
Modeling plasmas in fluid codes is essentially limited to the region of plasma quasineutrality since, due to their high thermodynamic equilibrium, fluid models near the plasma boundaries fail. Recently a concept of the polytropic coefficient function, which is a local quantity (rather than a constant, as usually assumed in plasma physics), has been introduced by Kuhn et al. [Phys. Plasmas 13, 013503 (2006)] . This concept has been already applied to the Tonks-Langmuir discharges in the case of ions created in plasmafrom a cold ion source, yet, due to the non-reliability of the existing models never to the important case with finite ion sources. Recently a highly reliable solution of the plasma equation with finite temperature in the limit e ß lD/ = 0 (where lD is the Debye length and is a proper characteristic length of the discharge) has been reported by Kos et al. [Phys. Plasmas 16, 093503 (2009)]. Unlike previous Bissell-Johnson models [Phys. Fluids 30, 779 (1987)], the validity of which was limited to the rather narrow ranges of ion source temperatures, with the model by Kos et al. this range is unlimited and solutions are obtained with a high reliability and in a high resolution. Here we employ this model to find relevant plasma parameters at the sheath edge. Special attention is given to the fluid Bohm criterion, which with the ion polytropic coefficient function turns out to be exact. It shows that a kinetic generalization of this criterion might be disregarded for practical purposes.

Jezik:Angleški jezik
Ključne besede:plasma polytropic coefficients, plasma-sheath boundary, fusion applications, integrodifferential equations, Bohm criterion
Vrsta gradiva:Delo ni kategorizirano (r6)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Leto izida:2011
Št. strani:str. 71-83
Številčenje:Vol. 3, no. 2
UDK:533.9
ISSN pri članku:2217-5539
COBISS.SI-ID:11829019 Povezava se odpre v novem oknu
Število ogledov:493
Število prenosov:149
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
 
Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
:
Objavi na:AddThis
AddThis uporablja piškotke, za katere potrebujemo vaše privoljenje.
Uredi privoljenje...

Gradivo je del revije

Naslov:Scientific publications of the State University of Novi Pazar
Založnik:State University
ISSN:2217-5539
COBISS.SI-ID:183225868 Povezava se odpre v novem oknu

Sekundarni jezik

Jezik:Angleški jezik
Ključne besede:politropični plazemski koeficient, meja plazma-plašč, fuzijske aplikacije, integro-diferencialne enačbe, Bohmov kriterij, fizika plazme

Podobna dela

Podobna dela v RUL:
Podobna dela v drugih slovenskih zbirkah:

Komentarji

Dodaj komentar

Za komentiranje se morate prijaviti.

Komentarji (0)
0 - 0 / 0
 
Ni komentarjev!

Nazaj