Radiant energy – Luminophor irradiation – With ultraviolet source
Reexamination Certificate
2007-09-11
2007-09-11
Porta, David (Department: 2884)
Radiant energy
Luminophor irradiation
With ultraviolet source
C250S458100, C250S459100
Reexamination Certificate
active
10330414
ABSTRACT:
A UV fluorescence detection system is provided comprising a dielectric barrier-discharge excimer lamp, an applied excitation source for communication with the excimer lamp; a fluorescence chamber having a sample gas containing sulfur dioxide, a light sensitive detector is in operative association with the sample chamber; and a signal analyzing and conditioning device for determining the sulfur dioxide content of the sample. The dielectric barrier-discharge excimer lamp possesses a krypton-chloride excimer fill gas mixture. An excitation interference filter and a fluorescence filter may be used in association with the lamp and chamber. In another embodiment, the present invention is a preferred detection method for detecting a specific species comprising the steps of exciting an excimer gas mixture that generates an emission spectrum possessing an specific wavelength, engaging this wavelength with the specific species intended for measurement, exciting the specific species thus inducing a secondary fluorescence or phosphorescence emission that is characteristic of the excited species and analyzing these emissions from the specific species under investigation. In yet another embodiment, the present invention is a preferred UV fluorescence detection method for detecting a specific species comprising the steps of exciting an excimer gas mixture, generating an emission spectrum having an optimal wavelength that enhances the fluorescence emission of the specific species under investigation, engaging the optimal wavelength with the specific species, generating an excited form of the specific species, inducing an emission from the specific species having a characteristic spectral profile, and analyzing the emission for evaluating the content of species under investigation.
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Gaworecki Mark R
Payne, J.D. Alton W.
Porta David
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