High-resolution compact Johann crystal spectrometer with the Livermore electron beam ion trap

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1781753· OSTI ID:20636731

Robbins, D L; Chen, H; Beiersdorfer, P; Faenov, A Ya; Pikuz, T A; May, M J; Dunn, J; Smith, A J ^[1]

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1. Department of Physics, Morehouse College, Atlanta, Georgia 30314 (United States)

A compact high-resolution ({lambda}/{delta}{lambda}{approx_equal}10 000) spherically bent crystal spectrometer in the Johann geometry was recently installed and tested on the Lawrence Livermore National Laboratory SuperEBIT electron beam ion trap. The curvature of the mica (002) crystal grating allows for higher collection efficiency compared to the flat and cylindrically bent crystal spectrometers commonly used on the Livermore electron beam ion traps. The spectrometer's Johann configuration enables orientation of its dispersion plane to be parallel to the electron beam propagation. Used in concert with a crystal spectrometer, whose dispersion plane is perpendicular to the electron beam propagation, the polarization of x-ray emission lines can be measured.

• OSTI ID: 20636731
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 75; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CRYSTALS
ELECTRON BEAMS
GRATINGS
MICA
OPTICS
POLARIZATION
SPATIAL RESOLUTION
TRAPS
X-RAY SPECTROMETERS