Research output: Contribution to journal › Article › peer-review
Reflection of sound by glow discharge plasma. / Soukhomlinov, Vladimir; Sheverev, Valery A.; Tarau, Calin.
In: Journal of Physics D: Applied Physics, Vol. 39, No. 16, 019, 21.08.2006, p. 3653-3658.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Reflection of sound by glow discharge plasma
AU - Soukhomlinov, Vladimir
AU - Sheverev, Valery A.
AU - Tarau, Calin
PY - 2006/8/21
Y1 - 2006/8/21
N2 - The propagation of sound through temperature gradient regions of a glow discharge plasma is analysed. Using a JWKB solution known for a Schröedinger's equation describing the propagation of quantum particle through a potential barrier, an algorithm for evaluation of the reflection coefficient is proposed. The analytical results are compared with those obtained by numerically solving Euler's equations using a second order finite difference approach. The sound reflection coefficients calculated for temperature distribution profiles that are typical for atmospheric glow discharge plasma demonstrate that, at zero-incidence angle, a significant part, up to 25%, of the wave energy can be reflected. These results indicate that sound attenuation by the atmospheric glow discharge plasma by more than 10 dB, as demonstrated in a recent experiment, can be explained, accounting for three-dimensional effects, by the thermal gradient sound-plasma interaction mechanisms.
AB - The propagation of sound through temperature gradient regions of a glow discharge plasma is analysed. Using a JWKB solution known for a Schröedinger's equation describing the propagation of quantum particle through a potential barrier, an algorithm for evaluation of the reflection coefficient is proposed. The analytical results are compared with those obtained by numerically solving Euler's equations using a second order finite difference approach. The sound reflection coefficients calculated for temperature distribution profiles that are typical for atmospheric glow discharge plasma demonstrate that, at zero-incidence angle, a significant part, up to 25%, of the wave energy can be reflected. These results indicate that sound attenuation by the atmospheric glow discharge plasma by more than 10 dB, as demonstrated in a recent experiment, can be explained, accounting for three-dimensional effects, by the thermal gradient sound-plasma interaction mechanisms.
UR - http://www.scopus.com/inward/record.url?scp=33746916491&partnerID=8YFLogxK
U2 - 10.1088/0022-3727/39/16/019
DO - 10.1088/0022-3727/39/16/019
M3 - Article
AN - SCOPUS:33746916491
VL - 39
SP - 3653
EP - 3658
JO - Journal Physics D: Applied Physics
JF - Journal Physics D: Applied Physics
SN - 0022-3727
IS - 16
M1 - 019
ER -
ID: 9652772