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I?S, microfocus source, sc-xrd component

IμS with Silver Radiation

I?S with Silver Radiation
IμS with Silver Radiation

The D8 QUEST features the world’s first microfocus source available with a silver tube. This IμS is combined with the specially designed HELIOS multilayer optics. Compared to a conventional Ag sealed tube system the flux density is an order of magnitude better.

The characteristic wavelength (0.56083 Å) of the silver target is the shortest wavelength available for in-house systems.


The use of silver radiation opens the possibility for high-end investigations of challenging samples particularly in the fields of mineralogy, solid-state chemistry and charge density investigations. Silver radiation allows the collection of data up to 30% higher resolution and at the same time minimizes absorption effects.

Application - Electron density studies

L (r) in the valence region of the Co atom
Residual Electron Density Map
Residual Electron Density Map (cut at 0.8 Å-1, contours at 0.05eÅ-3 interval)

The Laplacian of the charge density of Sc3CoC4 determined from data collected with an Ag IμS is very consistent with the theoretical model and reference data quoted in J. Chem. Soc. 2007, 129, 9356- 9656. Prof. Wolfgang Scherer, University of Augsburg, Germany

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