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A method to stabilize the incident X‐ray energy for anomalous diffraction measurements |
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| Authors: | Wenjia Wang Xiaoyun Yang Guangcai Chang Pengfei An Kewen Cha Yuhui Dong Peng Liu |
| Institution: | 1. School of Science, Qilu University of Technology, Changqing District, Jinan, People's Republic of China;2. Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, People's Republic of China;3. School of Life Science, University of Science and Technology of China, Hefei230026, People's Republic of 4. China |
| Abstract: | A method to calibrate and stabilize the incident X‐ray energy for anomalous diffraction data collection is provided and has been successfully used at the single‐crystal diffraction beamline 1W2B at the Beijing Synchrotron Radiation Facilities. Employing a feedback loop to control the movement of the double‐crystal monochromator, this new method enables the incident X‐ray energy to be kept within a 0.2 eV range at the inflection point of the absorption edge. |
| Keywords: | energy stability monochromator anomalous diffraction feedback absorption edge |