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Titolo:
Influence of plasma resistance and fluctuation on probe characteristics indetached recombining plasmas
Autore:
Ohno, N; Tanaka, N; Ezumi, N; Nishijima, D; Takamura, S;
Indirizzi:
Nagoya Univ, Grad Sch Engn, Dept Energy Engn & Sci, Chikusa Ku, Nagoya, Aichi 4648603, Japan Nagoya Univ Nagoya Aichi Japan 4648603 a Ku, Nagoya, Aichi 4648603, Japan Nagano Natl Coll Technol, Dept Elect & Control Engn, Nagano 3818550, JapanNagano Natl Coll Technol Nagano Japan 3818550 ngn, Nagano 3818550, Japan
Titolo Testata:
CONTRIBUTIONS TO PLASMA PHYSICS
fascicolo: 5, volume: 41, anno: 2001,
pagine: 473 - 480
SICI:
0863-1042(2001)41:5<473:IOPRAF>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIVERTOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Ohno, N Nagoya Univ, Grad Sch Engn, Dept Energy Engn & Sci, Chikusa Ku, Furo Chou,Nagoya, Aichi 4648603, Japan Nagoya Univ Furo Chou Nagoya Aichi Japan 4648603 hi 4648603, Japan
Citazione:
N. Ohno et al., "Influence of plasma resistance and fluctuation on probe characteristics indetached recombining plasmas", CONTR PLASM, 41(5), 2001, pp. 473-480

Abstract

In order to find the causes of the strong anomaly of current-voltage characteristics of Langmuir probe observed in detached recombining plasmas in a linear divertor plasma simulator, NAGDIS-II, we have investigated plasma resistance along a magnetic field and potential fluctuations in the detached recombining plasmas. Simple calculation on the ratio between the plasma length, at which plasma resistance and resistance of ion sheath formed around a probe tip become equal, and an electron collection length indicates that the evaluation of electron temperature T-e becomes inaccurate at Te of lessthan 0.6 eV when plasma density and neutral pressure are 1.0 x 10(18) m(-3) and 10 mtorr, respectively. The potential fluctuation in detached recombining plasmas was found to be so large compared to T-e/e, which can also modify the probe characteristics.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 12:55:42