FIZIKA B 12 (2003)  2, 181 - 192

DEVELOPMENT OF AN ONLINE CONTROL SYSTEM FOR A MULTI-ELEMENT FLUORESCENCE DETECTOR

BURKHARD WRENGER^b, MARTIN FIEBER-ERDMANN^a, HERMANN ROSSNER^b,2 and ELIZABETA HOLUB-KRAPPE^b,3

^aProtein-Struktur-Fabrik, c o BESSY GmbH, Albert-Einstein-Str. 15, D-12489 Berlin, Germany
^bHahn-Meitner-Institut, Berlin, Germany
E-mail addresses: ²[email protected], ³[email protected]

Paper devoted to honour the memory of Professor Nikola Cindro

Received 25 September 2003; revised manuscript received 30 October 2003
Accepted 8 December 2003        Online 3 March 2004

A new control system for fluorescence and EXAFS studies has been developed consisting of germanium detectors and digital signal processor electronics. Using a standard PC and a new software package leads to a high flexibility regarding application, user interface and use of different synchrotron facilities. The new system achieves spectra with considerably higher quality when compared to a traditional system for fluorescence and EXAFS studies. This allows the investigation of thin films and diluted systems as shown by experiments on a W/Nb multilayer system and on FeS₂ doped with Zn.

PACS numbers: 07.85.Nc, 61.10.Ht
UDC 539.1.074, 539.1.075

Keywords: X-ray absorption, EXAFS, NEXAFS, X-ray spectrometers, fluorescence spectroscopy, Ge detector, digital spectrometer, thin-film multilayers, diluted systems

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