Detector calibration in the wavelength region 10 nm to 100 nm based on a windowless rare gas ionization chamber

A detector calibration facility based on a rare gas ionization chamber has been built at the Electrotechnical Laboratory, Japan. We have realized a windowless system by applying strong differential pumping, which features no spectral limitation and easy gas handling. In the auto-ionization region ne...

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Bibliographic Details
Published in:Metrologia 1995-12, Vol.32 (6), p.525-529
Main Authors: Saito, T, Onuki, H
Format: Article
Language:English
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Summary:A detector calibration facility based on a rare gas ionization chamber has been built at the Electrotechnical Laboratory, Japan. We have realized a windowless system by applying strong differential pumping, which features no spectral limitation and easy gas handling. In the auto-ionization region near the xenon absorption edge, photon flux was found to be underestimated and this limited the maximum available wavelength to 92 nm. The uncertainty (1sigma) for a Si photodiode calibration was estimated to be within ?9% in the wavelength range 10 nm to 92 nm.
ISSN:0026-1394
1681-7575
DOI:10.1088/0026-1394/32/6/26