High-precision laser-assisted absolute determination of x-ray diffraction 
angles.

Kubicek, K.; Braun, J.; Bruhns, H.; Crespo Lopez-Urrutia, J. R.; Mokler, P. H.; Ullrich, J.

doi:10.1063/1.3662412

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

High-precision laser-assisted absolute determination of x-ray diffraction angles.

MPS-Authors

/persons/resource/persons59282

Kubicek, K.
Research Group of Structural Dynamics of (Bio)chemical Systems, MPI for biophysical chemistry, Max Planck Society;

External Resource

http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=RSINAK000083000001013102000001&idtype=cvips&doi=10.1063/1.3662412&prog=normal
(Publisher version)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

1479543.pdf
(Publisher version), 2MB

Supplementary Material (public)

There is no public supplementary material available

Citation

Kubicek, K., Braun, J., Bruhns, H., Crespo Lopez-Urrutia, J. R., Mokler, P. H., & Ullrich, J. (2012). High-precision laser-assisted absolute determination of x-ray diffraction angles. Review of Scientific Instruments, 83(1): 013102. doi:10.1063/1.3662412.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-A24B-C

Abstract

A novel technique for absolute wavelength determination in high-precision crystal x-ray spectroscopy recently introduced has been upgraded reaching unprecedented accuracies. The method combines vis- ible laser beams with the Bond method, where Bragg angles ( θ and − θ ) are determined without any x- ray reference lines. Using flat crystals this technique makes absolute x-ray wavelength measurements feasible even at low x-ray fluxes. The upgraded spectrometer has been used in combination with first experiments on the 1 s 2 p 1 P 1 → 1 s 21 S 0 w -line in He-like argon. By resolving a minute curvature of the x-ray lines the accuracy reaches there the best ever reported value of 1 . 5ppm. The result is sensitive to predicted second-order QED contributions at the level of two-electron screening and two- photon radiative diagrams and will allow for the first time to benchmark predicted binding energies for He-like ions at this level of precision.