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Title

Development of the scattering theory of X-ray absorption and core level photoemission

AuthorsRehr, J. J.; García de Abajo, Francisco Javier ; Díez Muiño, Ricardo
Issue DateOct-2002
PublisherElsevier
CitationJournal of Electron Spectroscopy and Related Phenomena 126(1-3): 67-76 (2002)
AbstractOver the past two decades dramatic progress has been made in the development of the theory of X-ray and electron spectroscopies, e.g., X-rayabsorption spectra (XAS), core-levelX-rayphotoemission spectroscopy (XPS), X-ray photoelectron diffraction (XPD), etc. A revolutionary advance was the development of efficient and accurate treatments of high-order, curved-wave electron multiple-scattering for high electron energies above a few hundred eV. These advances were applied first in the theory of X-rayabsorption fine structure (XAFS) and subsequently in X-ray photoelectron diffraction (XPD). They also led to efficient ab initio codes which permit a quantitative interpretation of the spectra. Extensions have made it possible to treat magnetic effects, e.g., X-ray magnetic circular dichroism (XMCD) and its analog in XPD. Important progress has recently been made in understanding near-edge spectra, e.g. X-rayabsorption near edge spectra (XANES), which often require a full-multiple-scattering treatment. Although such calculations had been highly demanding computationally, fast new approaches based on efficient Lanczos approaches and parallel processing have been developed to overcome this limitation.
Description10 páginas, 3 figuras.-- et al.
Publisher version (URL)http://dx.doi.org/10.1016/S0368-2048(02)00204-9
URIhttp://hdl.handle.net/10261/53431
DOI10.1016/S0368-2048(02)00204-9
ISSN0368-2048
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