Dependence of Plasma Plume Formation on Applied Voltage Waveform in Atmospheric-Pressure Plasma

Yambe, Kiyoyuki; Konda, Kohmei; Ogura, K.; Sakakita, Hajime

doi:10.1109/tps.2015.2506784

Cited by 10 publications

(1 citation statement)

References 17 publications

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“…The travel [12][13][14][15][16] and varies with strength, duration, rise time, and polarity of the applied voltage. [17][18][19] Consequently, the travel length of the plasma depends on plasma jet charge that changes air. [20][21][22][23] Plasma parameters (density and temperature) change with operation conditions, but with typical parameters, atmospheric-pressure nonequilibrium (cold) plasma can have a wide-ranging density of 10 17 -10 20 m -3 , and its temperature can be a few electron volts.…”

Section: Introductionmentioning

confidence: 99%

Excitation Wavelength and Temperature at Irradiation of Metal by Atmospheric-Pressure Nonequilibrium Argon Plasma

Yambe

Abe

2018

Plasma Med

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We studied excitation wavelength and temperature during irradiation of atmospheric-pressure nonequilibrium argon plasma to pure metal plate. We observed excitation emission of light activated by argon plasma in the same wavelength region, both with and without metal plate. The wavelength region activated by atmospheric-pressure nonequilibrium argon plasma was limited. In the presence of the ion corresponding to wavelength region activated by argon plasma, corresponding ions were activated. Both oxygen ions and metal ions are generated by plasma irradiation, but during each observed wavelength, the wavelength of metal ion activated by argon plasma was dominant, because excitation energy of oxygen ion is greater than that of each metal ion. Heat propagation from argon plasma to metal plate occurs by plasma irradiation. Consequently, heat propagation from argon plasma to copper plate is greater in comparison to cases with other metal plates. This is due to the high thermal conductivity of copper. In the case of atmospheric-pressure nonequilibrium plasma, plasma is affected by interaction with an object, because plasma energy is smaller, and temperature of nonequilibrium plasma changes via with thermal conductivity of the object.

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Section: Introductionmentioning

confidence: 99%

Excitation Wavelength and Temperature at Irradiation of Metal by Atmospheric-Pressure Nonequilibrium Argon Plasma

Yambe

Abe

2018

Plasma Med

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Optimization of Atmospheric Low-Temperature Plasma to Reduce Side Effects in Colorectal Cancer

bashkani

Yasserian²,

Hosseini³

et al. 2022

Braz J Phys

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Investigation of helium plasma temperature in atmospheric-pressure plasma plume using line pair method

Yambe

Satou

2016

Physics of Plasmas

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We have studied the atmospheric pressure plasma generated using a quartz tube, helium gas, and foil electrode by applying AC high voltage. The plasma plume is released into the atmosphere from inside the quartz tube. The helium plasma temperature is investigated using a line pair method. The excitation temperature of the electrons in the helium plasma is estimated at about 700 K along the plasma plume (column). The excitation temperature of the electrons decreases slightly towards the tip of the plasma plume. Because the emitted light of the helium ion (He I) excitation at a wavelength of 706 nm is weak at the tip of the plasma plume, the electron excitation temperature is overestimated. In the atmosphere region near the tip of the plasma plume, collisions between helium gas and air increase. Therefore, the electron excitation temperature determined using the observed emitted light from helium ion excitation inside of the quartz tube filled with a helium gas.

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Dependence of Plasma Plume Formation on Applied Voltage Waveform in Atmospheric-Pressure Plasma

Cited by 10 publications

References 17 publications

Excitation Wavelength and Temperature at Irradiation of Metal by Atmospheric-Pressure Nonequilibrium Argon Plasma

Excitation Wavelength and Temperature at Irradiation of Metal by Atmospheric-Pressure Nonequilibrium Argon Plasma

Optimization of Atmospheric Low-Temperature Plasma to Reduce Side Effects in Colorectal Cancer

Investigation of helium plasma temperature in atmospheric-pressure plasma plume using line pair method

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