Spectrum comprising the continuum Bremsstrahlung and the most energetic characteristic
spectral lines defined by differences in binding energy between electron
energy levels.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 736 (https://doi.org/10.1515/pac-2019-0203)