Core-level lifetimes as determined by x-ray photoelectron spectroscopy measurements
- 1 October 1980
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 22 (4), 1615-1624
- https://doi.org/10.1103/physreva.22.1615
Abstract
X-ray photoelectron spectroscopy (XPS) has been used to measure lifetime broadening of , , , , and core levels with binding energies less than 1500 eV in approximately 25 elements. The results show that the framework provided by previously accepted theoretical estimates of lifetime broadening is sometimes misleading. Lifetimes derived from theory and experiment often differ by a factor of 2 or more. In the transition metals of the first period plots of measured widths of the , and levels as a function of atomic number show broad maxima which are not adequately described by theory. The origin of this broadening is extensively discussed, as is the overestimation of lifetimes by theory in other areas of the periodic table.
Keywords
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