Extreme hydrogen plasma densities achieved in a linear plasma generator

G.J. Rooij, van; V.P. Veremiyenko; W.J. Goedheer; B. Groot, de; A.W. Kleyn; P.H.M. Smeets; T.W. Versloot; D.G. Whyte; R.A.H. Engeln; D.C. Schram; N.J. Lopes Cardozo

doi:10.1063/1.2716208

Extreme hydrogen plasma densities achieved in a linear plasma generator

G.J. Rooij, van, V.P. Veremiyenko, W.J. Goedheer, B. Groot, de, A.W. Kleyn, P.H.M. Smeets, T.W. Versloot, D.G. Whyte, R.A.H. Engeln, D.C. Schram, N.J. Lopes Cardozo

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Abstract

A magnetized hydrogen plasma beam was generated with a cascaded arc, expanding in a vacuum vessel at an axial magnetic field of up to 1.6 T. Its characteristics were measured at a distance of 4 cm from the nozzle: up to a 2 cm beam diameter, 7.5×1020 m-3 electron density, ~2 eV electron and ion temperatures, and 3.5 km/s axial plasma velocity. This gives a 2.6×1024 H+ m-2 s-1 peak ion flux density, which is unprecedented in linear plasma generators. The high efficiency of the source is obtained by the combined action of the magnetic field and an optimized nozzle geometry. This is interpreted as a cross-field return current that leads to power dissipation in the beam just outside the source.

Original language	English
Article number	121501
Pages (from-to)	121501-1/3
Number of pages	3
Journal	Applied Physics Letters
Volume	90
Issue number	12
DOIs	https://doi.org/10.1063/1.2716208
Publication status	Published - 2007

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title = "Extreme hydrogen plasma densities achieved in a linear plasma generator",

abstract = "A magnetized hydrogen plasma beam was generated with a cascaded arc, expanding in a vacuum vessel at an axial magnetic field of up to 1.6 T. Its characteristics were measured at a distance of 4 cm from the nozzle: up to a 2 cm beam diameter, 7.5×1020 m-3 electron density, ~2 eV electron and ion temperatures, and 3.5 km/s axial plasma velocity. This gives a 2.6×1024 H+ m-2 s-1 peak ion flux density, which is unprecedented in linear plasma generators. The high efficiency of the source is obtained by the combined action of the magnetic field and an optimized nozzle geometry. This is interpreted as a cross-field return current that leads to power dissipation in the beam just outside the source.",

author = "{Rooij, van}, G.J. and V.P. Veremiyenko and W.J. Goedheer and {Groot, de}, B. and A.W. Kleyn and P.H.M. Smeets and T.W. Versloot and D.G. Whyte and R.A.H. Engeln and D.C. Schram and {Lopes Cardozo}, N.J.",

year = "2007",

doi = "10.1063/1.2716208",

language = "English",

volume = "90",

pages = "121501--1/3",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Extreme hydrogen plasma densities achieved in a linear plasma generator

AU - Rooij, van, G.J.

AU - Veremiyenko, V.P.

AU - Goedheer, W.J.

AU - Groot, de, B.

AU - Kleyn, A.W.

AU - Smeets, P.H.M.

AU - Versloot, T.W.

AU - Whyte, D.G.

AU - Engeln, R.A.H.

AU - Schram, D.C.

AU - Lopes Cardozo, N.J.

PY - 2007

Y1 - 2007

N2 - A magnetized hydrogen plasma beam was generated with a cascaded arc, expanding in a vacuum vessel at an axial magnetic field of up to 1.6 T. Its characteristics were measured at a distance of 4 cm from the nozzle: up to a 2 cm beam diameter, 7.5×1020 m-3 electron density, ~2 eV electron and ion temperatures, and 3.5 km/s axial plasma velocity. This gives a 2.6×1024 H+ m-2 s-1 peak ion flux density, which is unprecedented in linear plasma generators. The high efficiency of the source is obtained by the combined action of the magnetic field and an optimized nozzle geometry. This is interpreted as a cross-field return current that leads to power dissipation in the beam just outside the source.

AB - A magnetized hydrogen plasma beam was generated with a cascaded arc, expanding in a vacuum vessel at an axial magnetic field of up to 1.6 T. Its characteristics were measured at a distance of 4 cm from the nozzle: up to a 2 cm beam diameter, 7.5×1020 m-3 electron density, ~2 eV electron and ion temperatures, and 3.5 km/s axial plasma velocity. This gives a 2.6×1024 H+ m-2 s-1 peak ion flux density, which is unprecedented in linear plasma generators. The high efficiency of the source is obtained by the combined action of the magnetic field and an optimized nozzle geometry. This is interpreted as a cross-field return current that leads to power dissipation in the beam just outside the source.

U2 - 10.1063/1.2716208

DO - 10.1063/1.2716208

M3 - Article

SN - 0003-6951

VL - 90

SP - 121501-1/3

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

M1 - 121501

ER -

Extreme hydrogen plasma densities achieved in a linear plasma generator

Abstract

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