Characteristic plume morphologies of atmospheric Ar and He plasma jets excited by a pulsed microwave hairpin resonator

Zhao Quan Chen, Ben Kuan Zhou, Huang Zhang, Ling Li Hong, Chang Lin Zou, Ping Li, Wei Dong Zhao, Xiao Dong Liu, Olga Stepanova, A. A. Kudryavtsev

Research output

2 Citations (Scopus)

Abstract

Different discharge morphologies in atmospheric Ar and He plasmas are excited by using a pulsed microwave hairpin resonator. Ar plasmas form an arched plasma plume at the opened end of the hairpin, whereas He plumes generate only a contracted plasmas in between both tips of metal electrodes. Despite this different point, their discharge processes have three similar characteristics: (i) the ionization occurs at the main electrode firstly and then develops to the slave electrode, (ii) during the shrinking stage the middle domain of the discharge channels disappears at last, and (iii) even at zero power input (in between pulses) a weak light region always exists in the discharge channels. Both experimental results and electromagnetic simulations suggest that the discharge is resonantly excited by the local enhanced electric fields. In addition, Ar ionization and excitation energies are lower than those of He, the effect of Ar gas flow is far greater than that of He gas, and the contribution of accelerated electrons only locates at the domain with the strongest electric fields. These reasons could be used to interpret the different characteristic plume morphologies of the proposed atmospheric Ar and He plasmas.

Original languageEnglish
Article number055202
JournalChinese Physics B
Volume27
Issue number5
DOIs
Publication statusPublished - 1 May 2018

Fingerprint

plasma jets
plumes
resonators
microwaves
electrodes
ionization
electric fields
gas flow
electromagnetism
pulses
gases
metals
excitation
electrons
simulation
energy

Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Chen, Zhao Quan ; Zhou, Ben Kuan ; Zhang, Huang ; Hong, Ling Li ; Zou, Chang Lin ; Li, Ping ; Zhao, Wei Dong ; Liu, Xiao Dong ; Stepanova, Olga ; Kudryavtsev, A. A. / Characteristic plume morphologies of atmospheric Ar and He plasma jets excited by a pulsed microwave hairpin resonator. In: Chinese Physics B. 2018 ; Vol. 27, No. 5.
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abstract = "Different discharge morphologies in atmospheric Ar and He plasmas are excited by using a pulsed microwave hairpin resonator. Ar plasmas form an arched plasma plume at the opened end of the hairpin, whereas He plumes generate only a contracted plasmas in between both tips of metal electrodes. Despite this different point, their discharge processes have three similar characteristics: (i) the ionization occurs at the main electrode firstly and then develops to the slave electrode, (ii) during the shrinking stage the middle domain of the discharge channels disappears at last, and (iii) even at zero power input (in between pulses) a weak light region always exists in the discharge channels. Both experimental results and electromagnetic simulations suggest that the discharge is resonantly excited by the local enhanced electric fields. In addition, Ar ionization and excitation energies are lower than those of He, the effect of Ar gas flow is far greater than that of He gas, and the contribution of accelerated electrons only locates at the domain with the strongest electric fields. These reasons could be used to interpret the different characteristic plume morphologies of the proposed atmospheric Ar and He plasmas.",
keywords = "atmospheric pressure plasma jet, hairpin resonant discharge, pulsed microwave discharge, surface plasmon polaritons",
author = "Chen, {Zhao Quan} and Zhou, {Ben Kuan} and Huang Zhang and Hong, {Ling Li} and Zou, {Chang Lin} and Ping Li and Zhao, {Wei Dong} and Liu, {Xiao Dong} and Olga Stepanova and Kudryavtsev, {A. A.}",
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Characteristic plume morphologies of atmospheric Ar and He plasma jets excited by a pulsed microwave hairpin resonator. / Chen, Zhao Quan; Zhou, Ben Kuan; Zhang, Huang; Hong, Ling Li; Zou, Chang Lin; Li, Ping; Zhao, Wei Dong; Liu, Xiao Dong; Stepanova, Olga; Kudryavtsev, A. A.

In: Chinese Physics B, Vol. 27, No. 5, 055202, 01.05.2018.

Research output

TY - JOUR

T1 - Characteristic plume morphologies of atmospheric Ar and He plasma jets excited by a pulsed microwave hairpin resonator

AU - Chen, Zhao Quan

AU - Zhou, Ben Kuan

AU - Zhang, Huang

AU - Hong, Ling Li

AU - Zou, Chang Lin

AU - Li, Ping

AU - Zhao, Wei Dong

AU - Liu, Xiao Dong

AU - Stepanova, Olga

AU - Kudryavtsev, A. A.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Different discharge morphologies in atmospheric Ar and He plasmas are excited by using a pulsed microwave hairpin resonator. Ar plasmas form an arched plasma plume at the opened end of the hairpin, whereas He plumes generate only a contracted plasmas in between both tips of metal electrodes. Despite this different point, their discharge processes have three similar characteristics: (i) the ionization occurs at the main electrode firstly and then develops to the slave electrode, (ii) during the shrinking stage the middle domain of the discharge channels disappears at last, and (iii) even at zero power input (in between pulses) a weak light region always exists in the discharge channels. Both experimental results and electromagnetic simulations suggest that the discharge is resonantly excited by the local enhanced electric fields. In addition, Ar ionization and excitation energies are lower than those of He, the effect of Ar gas flow is far greater than that of He gas, and the contribution of accelerated electrons only locates at the domain with the strongest electric fields. These reasons could be used to interpret the different characteristic plume morphologies of the proposed atmospheric Ar and He plasmas.

AB - Different discharge morphologies in atmospheric Ar and He plasmas are excited by using a pulsed microwave hairpin resonator. Ar plasmas form an arched plasma plume at the opened end of the hairpin, whereas He plumes generate only a contracted plasmas in between both tips of metal electrodes. Despite this different point, their discharge processes have three similar characteristics: (i) the ionization occurs at the main electrode firstly and then develops to the slave electrode, (ii) during the shrinking stage the middle domain of the discharge channels disappears at last, and (iii) even at zero power input (in between pulses) a weak light region always exists in the discharge channels. Both experimental results and electromagnetic simulations suggest that the discharge is resonantly excited by the local enhanced electric fields. In addition, Ar ionization and excitation energies are lower than those of He, the effect of Ar gas flow is far greater than that of He gas, and the contribution of accelerated electrons only locates at the domain with the strongest electric fields. These reasons could be used to interpret the different characteristic plume morphologies of the proposed atmospheric Ar and He plasmas.

KW - atmospheric pressure plasma jet

KW - hairpin resonant discharge

KW - pulsed microwave discharge

KW - surface plasmon polaritons

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