TY - JOUR
T1 - Resonant microwaves probing acoustic waves from an RF plasma jet
AU - Platier, Bart
AU - Staps, Tim J.A.
AU - Hak, Constant C.J.M.
AU - Beckers, Job
AU - IJzerman, Wilbert L.
PY - 2020/4/17
Y1 - 2020/4/17
N2 - Microwave cavity resonance spectroscopy is introduced and demonstrated as a new approach to investigate the generation of acoustic waves by a pulsed radio-frequency driven atmospheric-pressure plasma jet. Thanks to recent advancements in the diagnostic method, the lower detection limit for pressure changes in air is ∼0.3 Pa. Good agreement with conventional pressure transducer measurements with respect to the temporal evolution, the pressure amplitude and the spectral response is found. Fourier analysis revealed that the acoustic waves induced by the plasma can most likely be attributed to standing waves in the discharge geometry. Additionally, the plasma-induced acoustic waves of a few (tens of) Pa are proposed as an active mechanism in plasma medicine.
AB - Microwave cavity resonance spectroscopy is introduced and demonstrated as a new approach to investigate the generation of acoustic waves by a pulsed radio-frequency driven atmospheric-pressure plasma jet. Thanks to recent advancements in the diagnostic method, the lower detection limit for pressure changes in air is ∼0.3 Pa. Good agreement with conventional pressure transducer measurements with respect to the temporal evolution, the pressure amplitude and the spectral response is found. Fourier analysis revealed that the acoustic waves induced by the plasma can most likely be attributed to standing waves in the discharge geometry. Additionally, the plasma-induced acoustic waves of a few (tens of) Pa are proposed as an active mechanism in plasma medicine.
KW - Acoustic wave
KW - Atmospheric pressure plasma jet
KW - Cavity
KW - Microwave cavity resonance spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85085258735&partnerID=8YFLogxK
U2 - 10.1088/1361-6595/ab7d8e
DO - 10.1088/1361-6595/ab7d8e
M3 - Article
AN - SCOPUS:85085258735
SN - 0963-0252
VL - 29
JO - Plasma Sources Science and Technology
JF - Plasma Sources Science and Technology
IS - 4
M1 - 045024
ER -