X-ray optical grating and method for the production thereof, and X-ray detector embodying same

US8165270B2 · kind B2 · utility

Assignees

• Paul Scherrer Institut · CH
• Siemens Aktiengesellschaft · DE

Inventors

• Christian David · Lauchringen, DE
• Tilman Donath · Brugg, CH
• Eckhard Hempel · Bad Mergentheim, DE
• Martin Hoheisel · Erlangen, DE
• Barbara Matthis · Blankenloch, DE
• Franz Pfeiffer · Unterföhring, DE
• Stefan Popescu · Erlangen, DE

Key dates

• Filing date: Sep 25, 2009
• Grant date: Apr 24, 2012
• Expiry date: Oct 27, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In a method for the production of x-ray-optical gratings composed of a first material forming of periodically arranged grating webs and grating openings, a second material is applied by electroplating to fill the grid openings. The electroplating is continued until a cohesive layer of the second material with uniform height is created over the grating webs with this layer having a large absorption coefficient, the absorption properties of the grating structure of the grating are homogenized, so an improvement of the measurement signals that are generated with this grating is improved. Moreover, the mechanical stability of gratings produced in such a manner is improved.