Direct evidence for dynamic broadening of the energy spectra associated with the later steps of an Auger cascade

Auger cascade decay processes are of critical importance in x-ray-induced biological damage, chemical reactions, and desorption. Here, we report the first measurements of the isolated energy spectra of electrons emitted during the later steps of an Auger cascade process in a solid (MnO). The large w...

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Bibliographic Details
Published inPhysical review letters Vol. 101; no. 12; p. 127601
Main Authors Sundaramoorthy, R, Weiss, A H, Hulbert, S L, Bartynski, R A
Format Journal Article
LanguageEnglish
Published United States 19.09.2008
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Summary:Auger cascade decay processes are of critical importance in x-ray-induced biological damage, chemical reactions, and desorption. Here, we report the first measurements of the isolated energy spectra of electrons emitted during the later steps of an Auger cascade process in a solid (MnO). The large widths and energy gains observed in cascade-induced Mn MVV Auger spectra (as compared to the spectra resulting from direct photoexcitation of the M core hole) provide strong evidence that valence holes created in previous cascade steps participate dynamically in later cascade steps.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.101.127601