Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..963p&link_type=abstract
In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze
Physics
1
Solar Physics, Flares, X-Ray Spectroscopy
Scientific paper
Diogeness is the uncollimated scanning flat crystal spectrometer observing flare X-ray spectra in four narrow wavelength bands in the vicinity of Ca XIX, S XV and Si XIII He-like "triplets" around 3.18 Å, 5.04 Å and 6.65 Å. In two spectral channels, the same emission lines (around Ca XIX w resonance line, λ = 3.177 Å) are scanned in opposite directions. The X-rays are reflected from precisely adjusted identical Quartz monocrystals mounted on the common shaft in so-called Dopplerometer configuration. This novel spectrometer design allows for highly accurate determinations of wavelengths and precise determination of line Doppler shifts. We explain the concept of the X-ray Dopplerometer and present results of analysis of the Doppler line shifts for the spectra collected during 25 August 2001 X5.3 flare. We compare derived line of sight plasma velocities with those measured by Yohkoh BCS.
Kordylewski Zbigniew
Plocieniak Stefan
Sylwester Barbara
Sylwester Janusz
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