Optical and electrical diagnostics of an atmospheric pressure room-temperature plasma plume

Journal Article · Mon Mar 15 00:00:00 EDT 2010 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3360932· OSTI ID:21476163

Xian, Y; Lu, X; Tang, Z; Xiong, Q; Gong, W; Liu, D; Jiang, Z; Pan, Y ^[1]

---

1. CEEE, HuaZhong University of Science and Technology, WuHan, HuBei 430074 (China)

Cold plasmas have recently received great attention. In this paper, optical and electrical diagnostics are carried out on a reliable and user-friendly plasma plume. A simple electrical model is used to simulate the electrical characteristics of the device. The plasma is represented by a resistor connected in parallel with a capacitor, an inductor, and another resistor, which are connected in series. The simulated current-voltage waveforms have very good agreement with experimental measurements. Besides, the emission spectra of the plasma are also studied. It shows that, when Ar is used as working gas, there is strong OH (hydroxyl radical) emission and the emission intensities of the N{sub 2} emission bands are more than three times higher than that of He. On the contrary, when He is used as working gas, the emission intensities of N{sub 2}{sup +} band are much stronger. Detail analyses on these observations are presented.

• OSTI ID: 21476163
• Journal Information: Journal of Applied Physics, Vol. 107, Issue 6; Other Information: DOI: 10.1063/1.3360932; (c) 2010 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ARGON
ATMOSPHERIC PRESSURE
CAPACITORS
ELECTRIC CONDUCTIVITY
ELECTRIC POTENTIAL
EMISSION SPECTRA
HELIUM
HYDROXYL RADICALS
NITROGEN
PLASMA DIAGNOSTICS
PLASMA JETS
PLASMA SIMULATION
RESISTORS
TEMPERATURE RANGE 0273-0400 K
WAVE FORMS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELEMENTS
EQUIPMENT
FLUIDS
GASES
NONMETALS
PHYSICAL PROPERTIES
RADICALS
RARE GASES
SIMULATION
SPECTRA
TEMPERATURE RANGE