Electron-impact induced fluorescence for EUV spectrometer-detector calibration

► Introducing an easy-to-handle calibration method for UV-spectrometers (165-314 nm). ► Complete electron impact induced UV fluorescence spectra of rare gas atoms. ► Identification of 196 new fluorescence lines not observed before. ► Additional line catalog of 1670 lines for calculation tests and comparison. ► New challenge for theory - observation of 183 lines not yet identifiable.