Role of Penning ionization in the enhancement of streamer channel conductivity and Ar(1s5) production in a He-Ar plasma jet

2013 ◽  
Vol 113 (15) ◽  
pp. 153303 ◽  
Author(s):  
Brian L. Sands ◽  
Shih K. Huang ◽  
Jared W. Speltz ◽  
Matthew A. Niekamp ◽  
Biswa N. Ganguly
Keyword(s):  
Plasma Jet ◽  
Penning Ionization ◽  
Channel Conductivity ◽  
Streamer Channel ◽  
Ar Plasma

Effect of gas flow on transport of O (3Pj) atoms produced in ac power excited non-equilibrium atmospheric-pressure O2/Ar plasma jet

2013 ◽  
Vol 46 (46) ◽  
pp. 464006 ◽  
Author(s):  
Keigo Takeda ◽  
Masanori Kato ◽  
Fengdong Jia ◽  
Kenji Ishikawa ◽  
Hiroyuki Kano ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Gas Flow ◽  
Plasma Jet ◽  
Ac Power ◽  
Ar Plasma ◽  
Non Equilibrium

scholarly journals On the violation of local thermodynamic equilibrium in the plasma jet of an argon arc two-jet plasmatron

2019 ◽  
Vol 85 (1II)) ◽  
pp. 145-150
Author(s):  
A. S. Cherevko ◽  
A. A. Morozova
Keyword(s):  
Energy Level ◽  
Equilibrium State ◽  
Thermodynamic Equilibrium ◽  
Local Thermodynamic Equilibrium ◽  
Plasma Jet ◽  
Saha Equation ◽  
Radiation Processes ◽  
Unconventional Method

The degree and nature of the violation of local thermodynamic equilibrium (LTE) in the analytical zone of a plasma jet generated by an argon arc two-jet plasmatron (TJP) was estimated using an unconventional method based on determination of the nonequilibrium parameterbiequal to the ratio of the experimentally determined actual population of the energy level (ni) of the element to the population of the same level calculated from the Saha equation (nis). Partial ionizing deviation of plasma under study from the equilibrium state takes place only when low-lying atomic levels are overpopulated. The distinct dependence ofbion the ionization potential of the considered element (e.g., Ca, Mg, and Be) is shown. The results were interpreted in the light of the increasing role of radiation processes upon excitation of spectra in the argon arc two-jet plasmatron.

Emission Spectrum Diagnose to Ar Plasma Jet

2019 ◽  
Vol 40 (8) ◽  
pp. 1049-1054
Author(s):  
李 磊 LI Lei ◽  
陈晓东 CHEN Xiao-dong ◽  
袁承勋 YUAN Cheng-xun ◽  
周忠祥 ZHOU Zhong-xiang
Keyword(s):  
Emission Spectrum ◽  
Plasma Jet ◽  
Ar Plasma

scholarly journals Relation of electric conditions between a source of Ar plasma jet and a substrate with a configuration of a plasma sheet on a target

2019 ◽  
Vol 1328 ◽  
pp. 012060 ◽  
Author(s):  
Yu S Akishev ◽  
A A Balakirev ◽  
V B Karalnik ◽  
A V Petryakov ◽  
N I Trushkin
Keyword(s):  
Plasma Sheet ◽  
Plasma Jet ◽  
Ar Plasma

A simple cold Ar plasma jet generated with a floating electrode at atmospheric pressure

2008 ◽  
Vol 93 (1) ◽  
pp. 011503 ◽  
Author(s):  
Qiu-Yue Nie ◽  
Chun-Sheng Ren ◽  
De-Zhen Wang ◽  
Jia-Liang Zhang
Keyword(s):  
Atmospheric Pressure ◽  
Plasma Jet ◽  
Ar Plasma ◽  
Floating Electrode

scholarly journals Oxygen atomic density of atmospheric Ar plasma jet generated with syringe needle-ring electrodes

2013 ◽  
Vol 418 ◽  
pp. 012106
Author(s):  
Y Hong ◽  
J Li ◽  
J Pan ◽  
N Lu ◽  
K F Shang ◽  
...  
Keyword(s):  
Plasma Jet ◽  
Atomic Density ◽  
Syringe Needle ◽  
Ar Plasma

scholarly journals Investigation of the role of chemically active radicals in the antibacterial properties of a low-temperature plasma jet at ambient pressure mixed with argon and air

2021 ◽  
Vol 2064 (1) ◽  
pp. 012109
Author(s):  
N A Ashurbekov ◽  
Z M Isaeva ◽  
K M Rabadanov ◽  
G S Shakhsinov ◽  
A A Murtazaeva ◽  
...  
Keyword(s):  
Low Temperature ◽  
Plasma Torch ◽  
Ambient Pressure ◽  
Antibacterial Properties ◽  
Plasma Jet ◽  
Plasma Source ◽  
Biological Tissues ◽  
Low Temperature Plasma ◽  
Temperature Plasma

Abstract The work is devoted to the study of a low-temperature plasma jet of atmospheric pressure in a mixture of air with argon, used in plasma medicine. The intensities of the spectral emission bands of OH– (309 nm), N2 (337 nm), and N2 (356 nm) in different parts of the plasma jet were investigated depending on the argon flow rate and the amplitude of voltage pulses at the electrodes of the dielectric barrier discharge. The antibacterial effect of such a plasma jet on the surface of biological tissues has been experimentally investigated. Numerical simulation of ionization processes in the studied plasma source has been performed in the COMSOL Multiphysics software using. The dynamics of the distribution of excited molecules in the plasma torch as well as the kinetic plasma processes inside the plasma torch affecting the spatial distribution of its main characteristics have been analyzed.

scholarly journals Role of collisionality and radiative cooling in supersonic plasma jet collisions of different materials

2020 ◽  
Vol 101 (2) ◽  
Author(s):  
G. W. Collins ◽  
J. C. Valenzuela ◽  
C. A. Speliotopoulos ◽  
N. Aybar ◽  
F. Conti ◽  
...  
Keyword(s):  
Plasma Jet ◽  
Radiative Cooling ◽  
Supersonic Plasma ◽  
Supersonic Plasma Jet
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