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Title: Extended-range grazing-incidence spectrometer for high-resolution extreme ultraviolet measurements on an electron beam ion trap

A high-resolution grazing-incidence grating spectrometer has been implemented on the Livermore electron beam ion traps for performing very high-resolution measurements in the soft x-ray and extreme ultraviolet region spanning from below 10 Å to above 300 Å. The instrument operates without an entrance slit and focuses the light emitted by highly charged ions located in the roughly 50 μm wide electron beam onto a cryogenically cooled back-illuminated charge-coupled device detector. The measured line widths are below 0.025 Å above 100 Å, and the resolving power appears to be limited by the source size and Doppler broadening of the trapped ions. Comparisons with spectra obtained with existing grating spectrometers show an order of magnitude improvement in spectral resolution.
Authors:
; ; ; ;  [1] ;  [1] ;  [2]
  1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
  2. (Germany)
Publication Date:
OSTI Identifier:
22308952
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CHARGE-COUPLED DEVICES; DOPPLER BROADENING; ELECTRON BEAMS; EXTREME ULTRAVIOLET RADIATION; GRATINGS; GRAZING INCIDENCE TOMOGRAPHY; IONS; LINE WIDTHS; PHOTON EMISSION; RESOLUTION; SOFT X RADIATION; SPECTROMETERS; TRAPS; VISIBLE RADIATION