Comparison of an Ionization Chamber and a Thermopile as Absolute Detectors in the Extreme Ultraviolet
- 1 November 1967
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 6 (11) , 1886-1888
- https://doi.org/10.1364/ao.6.001886
Abstract
A comparison has been made between a calibrated thermopile and an argon ionization chamber as absolute detectors of radiant flux of wavelengths 584 Å and 735 Å. Corrections were applied to the data in order to account for the absorption due to gases in the monochromator, the energy carried away from the thermopile by photoejected electrons, nonuniformity of response across the surface of the thermopile, and uneven illumination of the thermopile by the flux from the monochromator. The two detectors were found to agree within the 3% estimated probable error in the measurements.Keywords
This publication has 3 references indexed in Scilit:
- On the Use of Thermopiles for Absolute Radiometry in the Far UltravioletApplied Optics, 1965
- Photoionization yield and absorption coefficient of xenon in the region of 860–1022ÅJournal of Quantitative Spectroscopy and Radiative Transfer, 1965
- Absolute Intensity Measurements in the Vacuum Ultraviolet*†Journal of the Optical Society of America, 1964