Measurements of the intensities of vacuum ultraviolet radiation sources using the flow ionization chamber
A method for measuring the intensities of vacuum ultraviolet lamps in wavelength ranges of 105–147 nm and photon fluxes of 10 5 –10 15 photons/s is described. A flow ionization complete-absorption chamber operating under the atmospheric pressure is applied. As a working medium, a mixture of ionized...
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| Veröffentlicht in: | Instruments and experimental techniques (New York) 2014-03, Vol.57 (2), p.195-200 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
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| Online-Zugang: | Volltext |
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| Zusammenfassung: | A method for measuring the intensities of vacuum ultraviolet lamps in wavelength ranges of 105–147 nm and photon fluxes of 10
5
–10
15
photons/s is described. A flow ionization complete-absorption chamber operating under the atmospheric pressure is applied. As a working medium, a mixture of ionized volatile organic-substance vapors, methane or oxygen, and also nitrogen with a known component concentration is used. The flux value is determined from the measured ionization current, quantum ionization yield, and portion of radiation absorbed by the ionized substance. |
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| ISSN: | 0020-4412 1608-3180 |
| DOI: | 10.1134/S0020441214020043 |