Research output: Contribution to journal › Article › peer-review
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: Contribution to journal › Article › peer-review
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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
UR - http://www.scopus.com/inward/record.url?scp=85047873129&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/characteristic-plume-morphologies-atmospheric-ar-plasma-jets-excited-pulsed-microwave-hairpin-resona
U2 - 10.1088/1674-1056/27/5/055202
DO - 10.1088/1674-1056/27/5/055202
M3 - Article
AN - SCOPUS:85047873129
VL - 27
JO - Chinese Physics B
JF - Chinese Physics B
SN - 1674-1056
IS - 5
M1 - 055202
ER -
ID: 28530459