X-ray standing wave analysis of nanostructures using partially coherent radiation

M. K. Tiwari, Gangadhar Das, M. J. Bedzyk

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The effect of longitudinal (or temporal) coherence on total reflection assisted x-ray standing wave (TR-XSW) analysis of nanoscale materials is quantitatively demonstrated by showing how the XSW fringe visibility can be strongly damped by decreasing the spectral resolution of the incident x-ray beam. The correction for nonzero wavelength dispersion (δλ0) of the incident x-ray wave field is accounted for in the model computations of TR-XSW assisted angle dependent fluorescence yields of the nanostructure coatings on x-ray mirror surfaces. Given examples include 90nm diameter Au nanospheres deposited on a Si(100) surface and a 3nm thick Zn layer trapped on top a 100nm Langmuir-Blodgett film coating on a Au mirror surface. Present method opens up important applications, such as enabling XSW studies of large dimensioned nanostructures using conventional laboratory based partially coherent x-ray sources.

Original languageEnglish (US)
Article number103104
JournalApplied Physics Letters
Volume107
Issue number10
DOIs
StatePublished - Sep 7 2015

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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