High-resolution, high-transmission soft x-ray spectrometer for the study of biological samples

Journal Article · Mon Mar 09 04:00:00 EDT 2009 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3133704· OSTI ID:985320

Fuchs, Oliver; Weinhardt, L; Blum, M; Weigand, M; Umbach, E; Bar, M; Heske, Clemens; Denlinger, Jonathan; Chuang, Y -D; McKinney, Wayne; Hussain, Zahid; Gullikson, Eric; Jones, M; Batson, Phil; Nelles, B; Follath, R

We present a variable line-space grating spectrometer for soft x-rays that covers the photon energy range between 130 and 650 eV. The optical design is based on the Hettrick-Underwood principle and tailored to synchrotron-based studies of radiation-sensitive biological samples. The spectrometer is able to record the entire spectral range in one shot, i.e., without any mechanical motion, at a resolving power of 1200 or better. Despite its slitless design, such a resolving power can be achieved for a source spot as large as 30x3000 mu m2, which is important for keeping beam damage effects in radiation-sensitive samples low. The high spectrometer efficiency allows recording of comprehensive two-dimensional resonant inelastic soft x-ray scattering (RIXS) maps with good statistics within several minutes. This is exemplarily demonstrated for a RIXS map of highly oriented pyrolytic graphite, which was taken within 10 min.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: Advanced Light Source Division
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 985320
• Report Number(s): LBNL-3647E
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 063103 Vol. 80
• Country of Publication: United States
• Language: English

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