A method to stabilize the incident X‐ray energy for anomalous diffraction measurements. (26th May 2017)

• Record Type: Journal Article
• Authors: Wang, Wenjia; Yang, Xiaoyun; Chang, Guangcai; An, Pengfei; Cha, Kewen; Dong, Yuhui; Liu, Peng
• Is Part Of: Journal of synchrotron radiation. Volume 24:Part 4(2017)
• Page Start: 781
• Page End: 786
• Publication Date: 2017-05-26
• Subjects: energy stability -- monochromator -- anomalous diffraction -- feedback -- absorption edge; Synchrotron radiation -- Periodicals; Free electron lasers -- Periodicals; 539.73505
• DOI: 10.1107/S1600577517006312
• Languages: English
• ISSNs: 0909-0495

Abstract

Abstract : A method to stabilize the incident X‐ray energy employing the absorption edges of heavy elements is provided. This method can be routinely utilized for anomalous diffraction or scattering data collection where energy stability is highly demanded. 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.