A new QEXAFS system on the general XAFS beamline at the Shanghai Synchrotron Radiation Facility.

ABSTRACT: A new quick-scanning extended X-ray absorption fine-structure (QEXAFS) system for in situ studies has been developed and tested on the general XAFS beamline at the Shanghai Synchrotron Radiation Facility. In the new system, an analog-to-digital converter (ADC) with 1 MHz sampling rate is used to acquire the detector data while one scaler is used to precisely calculate the scanning energy. Two external hardware trigger signals were adopted to synchronize the data collection of the ADC and the scaler. The software development platforms of the double-crystal monochromator control system and the new QEXAFS system have been unified with the Experimental Physics and Industrial Control System. By comparing the spectra acquired by the conventional step-by-step XAFS system with an energy range of 1

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC9641573 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature