Iodine and bromine resonance lamps in atmospheric research

Edgars Smalins; Uldis Gross; Peter Spietz; Arnolds Ubelis

doi:10.1117/12.517005

8 August 2003 Iodine and bromine resonance lamps in atmospheric research

Edgars Smalins, Uldis Gross, Peter Spietz, Arnolds Ubelis

Proceedings Volume 5123, Advanced Optical Devices, Technologies, and Medical Applications; (2003) https://doi.org/10.1117/12.517005
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

Abstract

For the first time previously developed iodine resonance spectra source has been tested in flash photolysis experiment. Quantitative measurements of concentration kinetics of iodine atomic species in a I₂+O₃ system are possible. The 183.038 nm resonance absorption transition of I(²P_3/2) in previously developed EDL has been studied; dependence of self-absorption and self-reversal on iodine partial pressure in the discharge volume has been measured. The search for optimal conditions for an iodine EDL with minimized self-absorption and sufficient intensity were made. In condition of flash photolysis with previously described method it is possible to determine the emission temperature, oscillator strength and corresponding absorption cross section for the I(²P_3/2) transition at 183.038 nm. With special set-up shown here it is possible to use the continuous light sources for absorption spectroscopy of molecular iodine species together with atomic iodine line soruce for resonance absorption spectroscopy of atomic iodine sepcies. There are evidences that bromine sources could be used in similar ways.

Citation Download Citation

Edgars Smalins, Uldis Gross, Peter Spietz, and Arnolds Ubelis "Iodine and bromine resonance lamps in atmospheric research", Proc. SPIE 5123, Advanced Optical Devices, Technologies, and Medical Applications, (8 August 2003); https://doi.org/10.1117/12.517005

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