TESTRICH, Holger, Dirk PASEDAG, Zdeněk NAVRÁTIL, B. MAY, Rene REIMER, Christian WILKE a Hans-Erich WAGNER. Investigations on the stability of the low pressure positive column in oxygen. Journal of Physics D: Applied Physics. Bristol, England: IOP Publishing Ltd., 2009, roč. 42, č. 14, s. 145207-145216. ISSN 0022-3727. |
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@article{839707, author = {Testrich, Holger and Pasedag, Dirk and Navrátil, Zdeněk and May, B. and Reimer, Rene and Wilke, Christian and Wagner, HansandErich}, article_location = {Bristol, England}, article_number = {14}, keywords = {instability;glow discharge;positive column;oxygen;waves}, language = {eng}, issn = {0022-3727}, journal = {Journal of Physics D: Applied Physics}, title = {Investigations on the stability of the low pressure positive column in oxygen}, url = {http://dx.doi.org/10.1088/0022-3727/42/14/145207}, volume = {42}, year = {2009} }
TY - JOUR ID - 839707 AU - Testrich, Holger - Pasedag, Dirk - Navrátil, Zdeněk - May, B. - Reimer, Rene - Wilke, Christian - Wagner, Hans-Erich PY - 2009 TI - Investigations on the stability of the low pressure positive column in oxygen JF - Journal of Physics D: Applied Physics VL - 42 IS - 14 SP - 145207 EP - 145207 PB - IOP Publishing Ltd. SN - 00223727 KW - instability;glow discharge;positive column;oxygen;waves UR - http://dx.doi.org/10.1088/0022-3727/42/14/145207 N2 - The stability of low pressure positive column in oxygen was investigated. The studied H- to T-mode transition showed a marked hysteresis in the E(I) characteristics which is affected by wall processes. At small discharge current the el. field showed a significant modulation, characterized by incoherent fluctuations with a broadband Fourier spectrum. With increasing current the discharge operates in the T-mode, where a mode selection with high modulation degree occurred, resulting in a periodic oscillation of the electric field at a discrete frequency spectrum. The dynamic state in the T-mode is expressed by T-waves moving from the cathode to the anode. The stability was studied using a hydrodynamic model considering electrons, positive and negative ions as well as metastable O2 molecules. In good agreement with the experiments the transition was explained as a linear unstable equilibrium state where the energy dependence of the corresponding rate coefficients is the driving mechanism. ER -
TESTRICH, Holger, Dirk PASEDAG, Zdeněk NAVRÁTIL, B. MAY, Rene REIMER, Christian WILKE a Hans-Erich WAGNER. Investigations on the stability of the low pressure positive column in oxygen. \textit{Journal of Physics D: Applied Physics}. Bristol, England: IOP Publishing Ltd., 2009, roč.~42, č.~14, s.~145207-145216. ISSN~0022-3727.
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