Читать книгу X-Ray Fluorescence Spectroscopy for Laboratory Applications - Michael Haschke, Jörg Flock - Страница 15

Two nomenclatures are used to designate the X-ray lines. The older is based on the fixed intensity ratios of the individual lines and was introduced by Siegbahn (1923). It also shows the development of the performance of X-ray spectrometers, in particular their energy resolution. For the first instruments, only the distinction between K-, L-, and M-lines was possible. With the improvement of the resolution, a splitting of these lines was then discovered, i.e. α-, β-, and γ-lines could be distinguished. Later, further splittings were detected, which are denoted by indices.

There is also the nomenclature introduced by the IUPAC, which is based on an exact designation of the respective electron levels from which the X-ray lines are generated. A comparison of the designations for the most important X-ray lines can be found in Table 2.2.