Appearance of the gold M IV, V  absorption edges in the background of energy‐dispersive X‐ray spectra | Zendy

Brombach J. D. | Zendy

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Appearance of the gold M IV, V absorption edges in the background of energy‐dispersive X‐ray spectra

Author(s) -

Brombach J. D.

Publication year - 1978

Publication title -

x‐ray spectrometry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.447

H-Index - 45

eISSN - 1097-4539

pISSN - 0049-8246

DOI - 10.1002/xrs.1300070208

Subject(s) - photoionization , spectral line , absorption (acoustics) , electron microprobe , atomic physics , absorption cross section , absorption spectroscopy , table (database) , analytical chemistry (journal) , electron , chemistry , cross section (physics) , physics , optics , ion , ionization , nuclear physics , mineralogy , organic chemistry , chromatography , quantum mechanics , astronomy , computer science , data mining

Background calculations for low‐energy energy‐dispersive X‐ray spectra from biological ice, when attempting quantitative microanalysis, must take into account the anomalous gold M IV, V absorption edges at 2220 and 2307 eV. The discrepancy between the mass absorption coefficient from generalized tables used in the electron microprobe analysis and those values actually observed is pointed out. The spectral shape of the Au M IV, V edges is discussed in terms of the photoionization cross‐section of the 3d‐subshell. Theoretical and experimental results are comparted with the table values. A formula used in the calculation of spectrometer efficiency and spectral background is given.

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