A Double-Crystal Soft X-Ray Spectrometer

摘要

The effect of the choice of various design parameters and the alignment of the instrument upon the resolution of an X-ray spectrograph in the region lambda approximately equal to 5...10 A is discussed. The influence of the mosaicness of the analyzing crystals upon the resolution and the intensity is treated in detail. The relative advantage of perfect crystals at high Bragg angles is emphasized. The construction of an instrument using two highly perfect calcite crystals (reflection face 211) is described. The operation of the instrument is tested with measurements of the VK-alpha and SK-beta lines at the parallel and antiparallel positions. The results are compared with previous work reported in the literature. (Author)