A supersonic arc jet

G.M.W. Kroesen, R.H.M. Miesen, C.J. Timmermans, D.C. Schram

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In the plasma of a cascaded arc, with arc currents from 40 up to 100 A, arc voltage of about 100 V and an argon pressure of about 0.5 bar, the gas temperature equals the electron temperature of about 12000K. The electron density ranges from 10(21) to 10(23) m/sup -3/, ionization degree is about 10%. The equilibrium of this kind of plasmas is well understood. In the authors' experiment this arc plasma expands into a vacuum system through a hole with a diameter of 4 mm in the anode. To obtain a background pressure of roughly 1 mBar, large pumping speeds are needed. The expansion clearly shows supersonic behaviour and is limited by a shock front (Barrel-shock and Mach-disk). The experiments were done in a mixture of argon (70 cc/sec) and hydrogen (0,7 cc/sec)
Originele taal-2Engels
TitelESCAMPIG 86 : Eighth European Sectional Conference on the Atomic and Molecular Physics of Ionized Gases : conference abstracts
RedacteurenA. Bethke
Plaats van productieDelft
UitgeverijEuropean Physical Society (EPS)
Pagina's186-187
StatusGepubliceerd - 1986

Vingerafdruk

arcs
argon
vacuum systems
shock fronts
gas temperature
plasma jets
pumping
anodes
shock
electron energy
ionization
expansion
electric potential
hydrogen

Citeer dit

Kroesen, G. M. W., Miesen, R. H. M., Timmermans, C. J., & Schram, D. C. (1986). A supersonic arc jet. In A. Bethke (editor), ESCAMPIG 86 : Eighth European Sectional Conference on the Atomic and Molecular Physics of Ionized Gases : conference abstracts (blz. 186-187). Delft: European Physical Society (EPS).
Kroesen, G.M.W. ; Miesen, R.H.M. ; Timmermans, C.J. ; Schram, D.C. / A supersonic arc jet. ESCAMPIG 86 : Eighth European Sectional Conference on the Atomic and Molecular Physics of Ionized Gases : conference abstracts . redacteur / A. Bethke. Delft : European Physical Society (EPS), 1986. blz. 186-187
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title = "A supersonic arc jet",
abstract = "In the plasma of a cascaded arc, with arc currents from 40 up to 100 A, arc voltage of about 100 V and an argon pressure of about 0.5 bar, the gas temperature equals the electron temperature of about 12000K. The electron density ranges from 10(21) to 10(23) m/sup -3/, ionization degree is about 10{\%}. The equilibrium of this kind of plasmas is well understood. In the authors' experiment this arc plasma expands into a vacuum system through a hole with a diameter of 4 mm in the anode. To obtain a background pressure of roughly 1 mBar, large pumping speeds are needed. The expansion clearly shows supersonic behaviour and is limited by a shock front (Barrel-shock and Mach-disk). The experiments were done in a mixture of argon (70 cc/sec) and hydrogen (0,7 cc/sec)",
author = "G.M.W. Kroesen and R.H.M. Miesen and C.J. Timmermans and D.C. Schram",
year = "1986",
language = "English",
pages = "186--187",
editor = "A. Bethke",
booktitle = "ESCAMPIG 86 : Eighth European Sectional Conference on the Atomic and Molecular Physics of Ionized Gases : conference abstracts",
publisher = "European Physical Society (EPS)",

}

Kroesen, GMW, Miesen, RHM, Timmermans, CJ & Schram, DC 1986, A supersonic arc jet. in A Bethke (redactie), ESCAMPIG 86 : Eighth European Sectional Conference on the Atomic and Molecular Physics of Ionized Gases : conference abstracts . European Physical Society (EPS), Delft, blz. 186-187.

A supersonic arc jet. / Kroesen, G.M.W.; Miesen, R.H.M.; Timmermans, C.J.; Schram, D.C.

ESCAMPIG 86 : Eighth European Sectional Conference on the Atomic and Molecular Physics of Ionized Gases : conference abstracts . redactie / A. Bethke. Delft : European Physical Society (EPS), 1986. blz. 186-187.

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic

TY - GEN

T1 - A supersonic arc jet

AU - Kroesen, G.M.W.

AU - Miesen, R.H.M.

AU - Timmermans, C.J.

AU - Schram, D.C.

PY - 1986

Y1 - 1986

N2 - In the plasma of a cascaded arc, with arc currents from 40 up to 100 A, arc voltage of about 100 V and an argon pressure of about 0.5 bar, the gas temperature equals the electron temperature of about 12000K. The electron density ranges from 10(21) to 10(23) m/sup -3/, ionization degree is about 10%. The equilibrium of this kind of plasmas is well understood. In the authors' experiment this arc plasma expands into a vacuum system through a hole with a diameter of 4 mm in the anode. To obtain a background pressure of roughly 1 mBar, large pumping speeds are needed. The expansion clearly shows supersonic behaviour and is limited by a shock front (Barrel-shock and Mach-disk). The experiments were done in a mixture of argon (70 cc/sec) and hydrogen (0,7 cc/sec)

AB - In the plasma of a cascaded arc, with arc currents from 40 up to 100 A, arc voltage of about 100 V and an argon pressure of about 0.5 bar, the gas temperature equals the electron temperature of about 12000K. The electron density ranges from 10(21) to 10(23) m/sup -3/, ionization degree is about 10%. The equilibrium of this kind of plasmas is well understood. In the authors' experiment this arc plasma expands into a vacuum system through a hole with a diameter of 4 mm in the anode. To obtain a background pressure of roughly 1 mBar, large pumping speeds are needed. The expansion clearly shows supersonic behaviour and is limited by a shock front (Barrel-shock and Mach-disk). The experiments were done in a mixture of argon (70 cc/sec) and hydrogen (0,7 cc/sec)

M3 - Conference contribution

SP - 186

EP - 187

BT - ESCAMPIG 86 : Eighth European Sectional Conference on the Atomic and Molecular Physics of Ionized Gases : conference abstracts

A2 - Bethke, A.

PB - European Physical Society (EPS)

CY - Delft

ER -

Kroesen GMW, Miesen RHM, Timmermans CJ, Schram DC. A supersonic arc jet. In Bethke A, redacteur, ESCAMPIG 86 : Eighth European Sectional Conference on the Atomic and Molecular Physics of Ionized Gases : conference abstracts . Delft: European Physical Society (EPS). 1986. blz. 186-187