Academic literature on the topic 'O-X-B Mode Conversion'

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Journal articles on the topic "O-X-B Mode Conversion"

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Senstius, Mads Givskov, Simon James Freethy, and Stefan Kragh Nielsen. "Nonlinear degradation of O-X-B mode conversion in MAST Upgrade." EPJ Web of Conferences 277 (2023): 01009. http://dx.doi.org/10.1051/epjconf/202327701009.

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Spherical tokamaks like the MAST Upgrade device are often operated in an overdense regime. As a consequence, conventional electron cyclotron resonance heating (ECRH) and current drive (ECCD) are typically not possible. MAST Upgrade is planned to investigate a mode coupling scheme known as O-X-B at high power, which may allow gyrotrons to heat and drive current in overdense plasmas by coupling electromagnetic waves to electrostatic electron Bernstein waves (EBWs) at the upper hybrid (UH) layer. However at the gyrotron beam intensities planned for MAST Upgrade, several nonlinear effects may degr
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Arefiev, A. V., I. Y. Dodin, A. Köhn, et al. "Kinetic simulations of X-B and O-X-B mode conversion and its deterioration at high input power." Nuclear Fusion 57, no. 11 (2017): 116024. http://dx.doi.org/10.1088/1741-4326/aa7e43.

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Bin, W., A. Bruschi, O. D'Arcangelo, et al. "Feasibility study of O–X coupling for overdense plasma heating through O–X–B mode conversion in FTU." Nuclear Fusion 53, no. 8 (2013): 083020. http://dx.doi.org/10.1088/0029-5515/53/8/083020.

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Kohn, A., E. Holzhauer, and U. Stroth. "Visualization of the O-X-B Mode Conversion Process With a Full-Wave Code." IEEE Transactions on Plasma Science 36, no. 4 (2008): 1220–21. http://dx.doi.org/10.1109/tps.2008.924265.

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Hansen, F. R., J. P. Lynov, and P. Michelsen. "The O-X-B mode conversion scheme for ECRH of a high-density Tokamak plasma." Plasma Physics and Controlled Fusion 27, no. 10 (1985): 1077–100. http://dx.doi.org/10.1088/0741-3335/27/10/002.

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Igami, H., S. Kubo, H. P. Laqua, et al. "Searching for O-X-B mode-conversion window with monitoring of stray microwave radiation in LHD." Review of Scientific Instruments 77, no. 10 (2006): 10E931. http://dx.doi.org/10.1063/1.2336460.

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Köhn, A., Á. Cappa, E. Holzhauer, F. Castejón, Á. Fernández, and U. Stroth. "Full-wave calculation of the O–X–B mode conversion of Gaussian beams in a cylindrical plasma." Plasma Physics and Controlled Fusion 50, no. 8 (2008): 085018. http://dx.doi.org/10.1088/0741-3335/50/8/085018.

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Pochelon, A., A. Mueck, L. Curchod, et al. "Electron Bernstein wave heating of over-dense H-mode plasmas in the TCV tokamak via O-X-B double mode conversion." Nuclear Fusion 47, no. 11 (2007): 1552–58. http://dx.doi.org/10.1088/0029-5515/47/11/017.

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Shevchenko, V. F. "ECE measurements via B-X-O mode conversion: A proposal to diagnose the q profile in spherical tokamaks." Plasma Physics Reports 26, no. 12 (2000): 1000–1004. http://dx.doi.org/10.1134/1.1331135.

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Guo, Xingyu, Ryo Ashida, Yuto Noguchi, et al. "Direct measurement of electron Bernstein waves in Low Aspect ratio Torus Experiment (LATE)." Plasma Physics and Controlled Fusion 64, no. 3 (2022): 035008. http://dx.doi.org/10.1088/1361-6587/ac4522.

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Abstract By using a newly developed five-pin probe antenna and two-dimensional mechanical probe driving system, the 2D wave pattern of phase and amplitude has been directly measured in the Low Aspect ratio Torus Experiment (LATE) device, for an overdense ECR plasma with microwave obliquely injected. In the case of O-mode injection, an electron Bernstein wave (EBW)-like wave pattern has been detected for the first time, in a localized region near the upper hybrid resonance layer. The pattern has a short wavelength of about 2 mm and is also electrostatic and backward. In the case of X-mode injec
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Dissertations / Theses on the topic "O-X-B Mode Conversion"

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Freethy, Simon. "Synthetic aperture imaging of B-X-O mode conversion." Thesis, University of York, 2012. http://etheses.whiterose.ac.uk/2352/.

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The conversion of thermally-born electrostatic waves in tokamak plasmas has the potential to be a powerful diagnostic for tokamak edge physics. Analytic theory and full wave modelling both conclude that analysis of emission in the microwave region carries with it information on the magnetic field in spatially localised areas which depend on density and frequency. Knowing these quantities and the 3D (2D + frequency) microwave emission pattern, it is in theory possible to calculate the current density which is vital to the understanding of the plasma pedestal. Motivated by a pilot experiment car
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BIN, WILLIAM MAURIZIO. "Evaluations of high density plasma heating through O-X-B double mode conversion of EC-Waves in FTU Tokamak." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2011. http://hdl.handle.net/10281/18996.

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The work presented in this PhD Thesis has been performed in the framework of research on Thermonuclear Fusion in magnetically confined plasmas of tokamak-like devices. The effort is aimed at a feasibility study of low-field side Electron Cyclotron Resonance Heating (ECRH) in overdense plasmas. The main aim of this Thesis consists in the study of the applicability of the mode conversion scheme, known as ”O-X-B Double Mode Conversion”, to the Italian tokamak FTU (Frascati Tokamak Upgrade), with the use of millimeter-waves at the 140 GHz frequency. This overdense plasma heating technique, not
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Conference papers on the topic "O-X-B Mode Conversion"

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Arefiev, A. V., E. J. Du Toit, A. Köhn, E. Holzhauer, V. F. Shevchenko, and R. G. L. Vann. "Kinetic simulations of X-B and O-X-B mode conversion." In RADIO FREQUENCY POWER IN PLASMAS: Proceedings of the 21st Topical Conference. EURATOM, 2015. http://dx.doi.org/10.1063/1.4936540.

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Köhn, A., R. Bilato, F. Volpe, et al. "Full-wave calculations of the O-X-B mode conversion scenario in the RFX-mod reversed field pinch device." In RADIO FREQUENCY POWER IN PLASMAS: Proceedings of the 18th Topical Conference. AIP, 2009. http://dx.doi.org/10.1063/1.3273794.

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Igami, H., S. Kubo, T. Shimozuma, et al. "Electron Bernstein wave heating and emission measurement through the very narrow O-X-B mode conversion window in the LHD." In RADIOFREQUENCY POWER IN PLASMAS: Proceedings of the 20th Topical Conference. American Institute of Physics, 2014. http://dx.doi.org/10.1063/1.4864595.

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