Time-resolved XAFS measurement using quick-scanning techniques at BSRF

A new quick-scanning X-ray absorption fine-structure (QXAFS) system has been established on beamline 1W1B at the Beijing Synchrotron Radiation Facility. As an independent device, the QXAFS system can be employed by other beamlines equipped with a double-crystal monochromator to carry out quick energy scans and data acquisition. Both continuous-scan and trapezoidal-scan modes are available in this system to satisfy the time scale from subsecond (in the X-ray absorption near-edge structure region) to 1   min. Here, the trapezoidal-scan method is presented as being complementary to the continuous-scan method, in order to maintain high energy resolution and good signal-to-noise ratio. The system is demonstrated to be very reliable and has been combined with in situ cells to carry out time-resolved XAFS studies.

Source: Journal of Synchrotron Radiation - April 12, 2017 Category: Physics Authors: Chu, S. Zheng, L. An, P. Gong, H. Hu, T. Xie, Y. Zhang, J. Tags: time-resolved XAFS QXAFS 1W1B BSRF research papers Source Type: research