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

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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 ... continued below

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Fuchs, Oliver; Weinhardt, L.; Blum, M.; Weigand, M.; Umbach, E.; Bar, M. et al. March 9, 2009.

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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.

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  • Journal Name: Review of Scientific Instruments; Journal Volume: 80; Journal Issue: 063103

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  • Report No.: LBNL-3647E
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.1063/1.3133704 | External Link
  • Office of Scientific & Technical Information Report Number: 985320
  • Archival Resource Key: ark:/67531/metadc1016078

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  • March 9, 2009

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  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 18, 2017, 10:07 a.m.

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Fuchs, Oliver; Weinhardt, L.; Blum, M.; Weigand, M.; Umbach, E.; Bar, M. et al. High-resolution, high-transmission soft x-ray spectrometer for the study of biological samples, article, March 9, 2009; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc1016078/: accessed November 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.