Multiple diagnostics in a high-pressure hydrogen microwave plasma torch

Journal Article · Mon Feb 01 04:00:00 EST 2010 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3306731· OSTI ID:21347259

Torres, J ^[1]; Gamero, A; Sola, A ^[2]

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1. Departamento de Fisica Aplicada, Universidad de Cordoba, Campus Universitario de Rabanales, C2, 14071 Cordoba (Spain)
2. Departamento de Fisica, Universidad de Cordoba, Campus Universitario de Rabanales, C2, 14071 Cordoba (Spain)

We present an experimental study of a hydrogen plasma produced by a microwave axial injection torch, launching the plasma in a helium-filled chamber. Three different diagnostic methods have been used to obtain the electron density and temperature as follows: The Stark intersection method of Balmer spectral lines (already tested in argon and helium plasmas); the modified Boltzmann-plot showing that the plasma is far from the local thermodynamic equilibrium but ruled by the excitation-saturation balance; and a study by the disturbed bilateral relations theory. All of these diagnostic techniques show a good agreement.

• OSTI ID: 21347259
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 5 Vol. 96; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ARGON
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC RADIATION
ELECTRON DENSITY
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EQUILIBRIUM
EXCITATION
FLUIDS
GASES
HELIUM
HYDROGEN
LTE
MICROWAVE RADIATION
NONMETALS
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA PRODUCTION
RADIATIONS
RARE GASES
STARK EFFECT