| Literature DB >> 24784594 |
Sorin G Chiuzbăian1, Coryn F Hague1, Antoine Avila1, Renaud Delaunay1, Nicolas Jaouen2, Maurizio Sacchi2, François Polack2, Muriel Thomasset2, Bruno Lagarde2, Alessandro Nicolaou2, Stefania Brignolo1, Cédric Baumier1, Jan Lüning1, Jean-Michel Mariot1.
Abstract
A soft x-ray spectrometer based on the use of an elliptical focusing mirror and a plane varied line spacing grating is described. It achieves both high resolution and high overall efficiency while remaining relatively compact. The instrument is dedicated to resonant inelastic x-ray scattering studies. We set out how this optical arrangement was judged best able to guarantee performance for the 50 - 1000 eV range within achievable fabrication targets. The AERHA (adjustable energy resolution high acceptance) spectrometer operates with an effective angular acceptance between 100 and 250 μsr (energy dependent) and a resolving power well in excess of 5000 according to the Rayleigh criterion. The high angular acceptance is obtained by means of a collecting pre-mirror. Three scattering geometries are available to enable momentum dependent measurements with 135°, 90°, and 50° scattering angles. The instrument operates on the Synchrotron SOLEIL SEXTANTS beamline which serves as a high photon flux 2 × 200 μm(2) focal spot source with full polarization control.Year: 2014 PMID： 24784594 DOI： 10.1063/1.4871362
Source DB: PubMed Journal: Rev Sci Instrum ISSN： 0034-6748 Impact factor: 1.523