Undulator spectral characteristics

Fig. 8. Schematic representation of spectral characteristics of undulators see text for definition of parameters K and I.

Figure A2.1 The spectrum (schematic) emitted by a conventional X-ray source using a copper anode as an example spectral lines characteristic of the anode element superimposed on a white radiation background (the bremsstrahlung). The dashed curve represents the effect of a nickel filter on the emission spectrum (full curve). In some ways, the spectrum resembles that of an undulator Characteristic wavelengths (Cu) Kfi= 1.3922 A, ai=1.5405A,...

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