Hydrogen dissociation degree in the Grimm-type glow discharge measured by optical emission spectroscopy
The hydrogen dissociation degree is measured by means of optical emission spectroscopy in the cathode sheath of cylindrical abnormal Grimm-type DC glow discharge operating in the hydrogen–argon mixture at low pressure. The degree of dissociation, ranging from 80% in the close vicinity of the cathode...
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| Veröffentlicht in: | The European physical journal. D, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2023-07, Vol.77 (7), Article 130 |
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| container_title | The European physical journal. D, Atomic, molecular, and optical physics |
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| creator | Vasiljević, Milica M. Majstorović, Gordana Lj Videnović, Ivan R. Spasojević, Djordje |
| description | The hydrogen dissociation degree is measured by means of optical emission spectroscopy in the cathode sheath of cylindrical abnormal Grimm-type DC glow discharge operating in the hydrogen–argon mixture at low pressure. The degree of dissociation, ranging from 80% in the close vicinity of the cathode and decreasing to 60% towards the negative glow, is obtained from the intensity ratio of the hydrogen Balmer H
γ
line and the diagonal Fulcher-α molecular bands. The cathode sheath thickness is extracted from the electric field strength distribution measured using Stark spectroscopy of the hydrogen Balmer H
α
line. An electron temperature of 2.7 eV in the negative glow region is estimated by observing the intensity ratio of the diagonal Fulcher-α bands and the H
α
line.
Graphical Abstract |
| doi_str_mv | 10.1140/epjd/s10053-023-00704-7 |
| format | Article |
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γ
line and the diagonal Fulcher-α molecular bands. The cathode sheath thickness is extracted from the electric field strength distribution measured using Stark spectroscopy of the hydrogen Balmer H
α
line. An electron temperature of 2.7 eV in the negative glow region is estimated by observing the intensity ratio of the diagonal Fulcher-α bands and the H
α
line.
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γ
line and the diagonal Fulcher-α molecular bands. The cathode sheath thickness is extracted from the electric field strength distribution measured using Stark spectroscopy of the hydrogen Balmer H
α
line. An electron temperature of 2.7 eV in the negative glow region is estimated by observing the intensity ratio of the diagonal Fulcher-α bands and the H
α
line.
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γ
line and the diagonal Fulcher-α molecular bands. The cathode sheath thickness is extracted from the electric field strength distribution measured using Stark spectroscopy of the hydrogen Balmer H
α
line. An electron temperature of 2.7 eV in the negative glow region is estimated by observing the intensity ratio of the diagonal Fulcher-α bands and the H
α
line.
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| subjects | Applications of Nonlinear Dynamics and Chaos Theory Argon Atomic Cathodes Electric field strength Electron energy Emission spectroscopy Glow discharges H alpha line Low pressure Molecular Optical and Plasma Physics Optical emission spectroscopy Physical Chemistry Physics Physics and Astronomy Physics of Ionized Gases and Spectroscopy of Isolated Complex Systems: Fundamentals and Applications Quantum Information Technology Quantum Physics Regular Article – Plasma Physics Sheaths Spectroscopic analysis Spectroscopy/Spectrometry Spintronics |
| title | Hydrogen dissociation degree in the Grimm-type glow discharge measured by optical emission spectroscopy |
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