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Titolo:
A comparison of flow velocities measured using an impact-pressure probe and electron time of flight in a supersonic flow. Implications for electron thermalization
Autore:
Mostefaoui, T; Rebrion-Rowe, C; Travers, D; Rowe, BR;
Indirizzi:
Univ Rennes 1, Lab PALMS, F-35042 Rennes, France Univ Rennes 1 Rennes France F-35042 1, Lab PALMS, F-35042 Rennes, France
Titolo Testata:
MEASUREMENT SCIENCE & TECHNOLOGY
fascicolo: 4, volume: 11, anno: 2000,
pagine: 425 - 429
SICI:
0957-0233(200004)11:4<425:ACOFVM>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERSTELLAR CLOUDS; ATTACHMENT; MOLECULES; ENERGIES; COEFFICIENTS; COLLISIONS; THRESHOLD; DESIGN; CF3BR; GASES;
Keywords:
electron bulk velocity; neutral-species bulk velocity; vacuum; supersonic expansion; Langmuir probe; Pitot tube; electron thermalization; electron attachment;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Mostefaoui, T Univ Rennes 1, Lab PALMS, Campus Beaulieu, F-35042 Rennes, France Univ Rennes 1 Campus Beaulieu Rennes France F-35042 France
Citazione:
T. Mostefaoui et al., "A comparison of flow velocities measured using an impact-pressure probe and electron time of flight in a supersonic flow. Implications for electron thermalization", MEAS SCI T, 11(4), 2000, pp. 425-429

Abstract

The bulk velocity of electrons in a burst of plasma created in a uniform supersonic how by a pulsed electron beam has been measured by a time-of-flight technique using a Langmuir probe. This velocity is compared with the neutral-species bulk velocity deduced from impact-pressure measurements. This comparison allows a determination of an upper limit of the electron drift velocity to be made, which in turn shows that electrons are well thermalizedin the how. Therefore this kind of flowing supersonic afterglow can be used for electron-attachment studies at very low temperatures.

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Documento generato il 30/11/20 alle ore 19:49:51