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A new type of grazing-incidence VUV spectrometer with extended spectral range (up to 80nm), provided by a specially designed grating.

- Broad VUV spectral range

- High resolution

- Compact size

Description

VUV Grazing incidence spectrometer GIS

Off-Rowland geometry, variable grating–detector distance

Three modifications:

  • GIS-1 – Installed inside vacuum chamber, extra small size
  • GIS 2,3 – Installed outside vacuum chamber, port for differential pumping

Compatible with different types of detectors, including CCD and MCP

Simple installation and alignment

Specifications
  • Diffraction gratings: 1-m spherical replaceable diffraction gratings, 1200, 600, 300 G/mm, 4° grazing angle
  • Spectral range : λ=2–60nm GIS-1/GIS-2, 2-80nm GIS-3
  • Spectrometer’s length: 180-300 mm

GIS spectrometers

Spectral range, dispersion and spectral resolution at default entrance slit width of 20um:

Grating, G/mm Spectral range, nm Dispersion [nm/mm] Resolution, nm
1200 2-10 0.83 0.02
600 5-30 1.66 0.04
300 10-60 3.33 0.08

 Compability and Installation:

Model Spectral hight, nm Outside/inside vacuum chamber CCD comapbility
 MCP compability
GIS 1 10 Inside + -
GIS 2 10 Outside + one sectiion/stripe
GIS 3 28 Outside + few sections/stripes