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Title: Calibration of a High Resolution Soft X-ray Spectrometer

Conference ·

A high resolution grating spectrometer (HRGS) with 2400 line/mm variable line spacing grating for the 10-50 {angstrom} wavelength range has been designed for laser-produced plasma experiments at the Lawrence Livermore National Laboratory (LLNL). The spectrometer has a large radius of curvature, R=44.3 m, is operated at a 2{sup o} grazing angle and can record high signal-to-noise spectra when used with a low-noise, cooled, charge-coupled device detector. The instrument can be operated with a 10-25 {micro}m wide slit to achieve the best spectral resolving power on laser plasma sources, approaching 2000, or in slitless mode with a small symmetrical emission source. Results will be presented for the spectral response of the spectrometer cross-calibrated at the LLNL Electron Beam Ion Trap facility using the broadband x-ray energy EBIT Calorimeter Spectrometer (ECS).

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
972403
Report Number(s):
LLNL-PROC-423239; TRN: US1001592
Resource Relation:
Journal Volume: 130; Conference: Presented at: 11th International Conference on X-ray Lasers, Belfast, United Kingdom, Aug 17 - Aug 22, 2008
Country of Publication:
United States
Language:
English

References (7)

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Soft-X-ray spectroscopic diagnostics of laboratory plasmas journal June 1981
Absolute calibration of a flat field spectrometer in the wavelength range 10–70 Å journal May 1998
The XRS microcalorimeter spectrometer at the Livermore electron beam ion trap journal January 2008
Rapid, absolute calibration of x-ray filters employed by laser-produced plasma diagnostics journal October 2008
A “brief” history of spectroscopy on EBIT journal January 2008
Flat-field grating spectrometer for high-resolution soft x-ray and extreme ultraviolet measurements on an electron beam ion trap journal October 2004