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1	Herstellung von Optiken für weiche Röntgenstrahlung und deren Charakterisierung an Labor- und Synchrotronstrahlungsquellen / Fabrication of Soft X-ray Optics and their Characterisation with Labratory and Synchrotron Sources Reese, Michael 08 December 2011 (has links) No description available. 530 Physik Physics Laserplasmaquelle Kryotarget weiche Röntgenstrahlung SXR XUV Wasserfenster Mikroskop Multischicht-Laue-Linse Lochblende Wellenleiter laserplasma source kryotarget soft X-ray SXR XUV water window microscope multilayer laue lens pinhole waveguide 33.05 33.18 33.80 RDE000
2	Investigation of Magnetohydrodynamic Fluctuation Modes in the STOR-M Tokamak Gamudi Elgriw, Sayf 31 July 2009 While magnetohydrodynamic (MHD) instabilities are considered one of the intriguing topics in tokamak physics, a feasibility study was conducted in the Saskatchewan Torus-Modified (STOR-M) tokamak to investigate the global MHD activities during the normal (L-mode) and improved (H-mode) confinement regimes. The experimental setup consists of 32 discrete Mirnov coils arranged into four poloidal arrays and mounted on STOR-M at even toroidal distances. The perturbed magnetic field fluctuations during STOR-M discharges were acquired and processed by the Fourier transform (FT), the wavelet analysis and the singular value decomposition (SVD) techniques. In L-mode discharges, the poloidal MHD mode numbers varied from 2 to 4 with peak frequencies in the range 20-40 kHz. The dominant toroidal modes were reported between 1 and 2 oscillating at frequencies 15-35 kHz. In another experiment, a noticeable MHD suppression was observed during the H-mode-like phase induced by the compact torus (CT) injection into STOR-M. However, a burst-like mode called the gong mode was triggered prior to the H-L transition, followed by coherent Mirnov oscillations. Mirnov oscillations with strong amplitude modulations were observed in the STOR-M tokamak. Correlations between Mirnov signals and soft x-ray (SXR) signals were found. gong Singular Value Decomposition wavelet Fourier instabilities Magnetohydrodynamic plasma SXR Mirnov compact torus STOR-M tokamak fusion
3	Investigation of Magnetohydrodynamic Fluctuation Modes in the STOR-M Tokamak Gamudi Elgriw, Sayf 31 July 2009 (has links) While magnetohydrodynamic (MHD) instabilities are considered one of the intriguing topics in tokamak physics, a feasibility study was conducted in the Saskatchewan Torus-Modified (STOR-M) tokamak to investigate the global MHD activities during the normal (L-mode) and improved (H-mode) confinement regimes. The experimental setup consists of 32 discrete Mirnov coils arranged into four poloidal arrays and mounted on STOR-M at even toroidal distances. The perturbed magnetic field fluctuations during STOR-M discharges were acquired and processed by the Fourier transform (FT), the wavelet analysis and the singular value decomposition (SVD) techniques. In L-mode discharges, the poloidal MHD mode numbers varied from 2 to 4 with peak frequencies in the range 20-40 kHz. The dominant toroidal modes were reported between 1 and 2 oscillating at frequencies 15-35 kHz. In another experiment, a noticeable MHD suppression was observed during the H-mode-like phase induced by the compact torus (CT) injection into STOR-M. However, a burst-like mode called the gong mode was triggered prior to the H-L transition, followed by coherent Mirnov oscillations. Mirnov oscillations with strong amplitude modulations were observed in the STOR-M tokamak. Correlations between Mirnov signals and soft x-ray (SXR) signals were found. gong Singular Value Decomposition wavelet Fourier instabilities Magnetohydrodynamic plasma SXR Mirnov compact torus STOR-M tokamak fusion

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