SUMER Solar

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We present a study of a high spatial resolution raster scan taken on-disk with the SoHO/SUMER spectrograph in a solar polar Coronal Hole (CH) region. We have analysed the line shifts and widths of two EUV emitting ions, O  703.87 Å and Mg  706.02 Å. Our results confirm plasma outflows from CHs. In particular, the correlation between the intensity and(More)
Three systems are investigated. (1) A strong corrosion of the polycristalline n-TiO2 semiconductor occurs when it is used as an anode in the Fujishima-Honda cell. A probable reaction mechanism for O2 production is suggested. (2) By illumination of the MB+ −Fe2+ system (λ< 400 nm; pH 2) H atoms are formed as a consequence of energy transfer from the dye to(More)
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