Trace Gas Analysis with Integrating Spheres

  • Heinz Schimpl
  • Heinrich Hess
  • Anton Ziegler
  • Stefan Brandes


To measure small gas concentrations by absorption spectroscopy, the wavelength of monochromatic light is adjusted to the absorption line of the gas molecule. According to Lambert-Beer’s absorption law, the absorption coefficient K of the gas can then be determined from the ratio of the radiant flux transmitted by the gas sample to the radiant flux without gas.1


Absorption Cross Section Radiant Flux Reference Path Sphere Wall Wall Reflectance 
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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Heinz Schimpl
    • 1
  • Heinrich Hess
    • 1
  • Anton Ziegler
    • 2
  • Stefan Brandes
    • 2
  1. 1.Institut für ExperimentalphysikTechnische Universität GrazAustria
  2. 2.Anton Paar Ges.m.b.H.GrazAustria

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