X-ray fluorescence: a positive use in SphinX
S. Płocieniak
Space Research Centre PAS, Solar Physics Division, Wroclaw, Poland
Fluorescence emission coming from various parts of the instrument was usually a big problem in construction of X-ray instruments. It comes out as a result of illumination of crystals, foils etc through a direct harder component of solar X-ray emission as well as from energetic particles penetrating the inside of the instrument. SphinX design is optimized in order to keep these unwanted fluorescence emission low. In addition, we are making use of the fluorescence in a new, positive way by incorporating the process for in-flight energy calibration of the detectors gain and for new-concept narrow-band solar photometry. We present principles and details of these new designs and estimate expected rates to be observed for selected solar activity levels.