High-resolution, high-transmission soft x-ray spectrometer for the study of biological samples
| Autor: | B. Nelles, Yi-De Chuang, Rolf Follath, Oliver Fuchs, Monika Blum, Markus Weigand, Lothar Weinhardt, Wayne R. McKinney, E. Umbach, Clemens Heske, Marcus Bär, Phil Batson, Zahid Hussain, Jonathan D. Denlinger, Eric M. Gullikson, Marcus Jones |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Physics
Photons Photon Spectrometer business.industry X-Rays Resolution (electron density) Synchrotron radiation Spectrometry X-Ray Emission Equipment Design Photon energy Synchrotron law.invention Optics Highly oriented pyrolytic graphite law Scattering Radiation business Instrumentation Beam (structure) Algorithms |
| Zdroj: | The Review of scientific instruments. 80(6) |
| ISSN: | 1089-7623 |
| Popis: | We present a variable line-space grating spectrometer for soft s-rays that coverst 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 is slitless design, such a resolving power can be achieved for a source spot as large as (30 x 3000) micrometers squared, 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 scatters (RIXS) maps with good statistics within several minutes. This is exemplarily demonstrated for a RIXS map of highly oriented pyrolytic graphite, which was taken with 10 min. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|