ElectricOIL discharge and post-discharge kinetics experiments and modeling

Andrew D. Palla; J. W. Zimmerman; Brian S. Woodard; David L. Carroll; J. T. Verdeyen; Tyronne C. Lim; Wilson Terry Rawlins; Seonkyung Lee; Steven J. Davis; W. C. Solomon

doi:10.1117/12.717646

14 February 2007 ElectricOIL discharge and post-discharge kinetics experiments and modeling

Andrew D. Palla, J. W. Zimmerman, Brian S. Woodard, David L. Carroll, J. T. Verdeyen, Tyronne C. Lim, Wilson Terry Rawlins, Seonkyung Lee, Steven J. Davis, W. C. Solomon

Author Affiliations +

Proceedings Volume 6454, High Energy/Average Power Lasers and Intense Beam Applications; 64540I (2007) https://doi.org/10.1117/12.717646
Event: Lasers and Applications in Science and Engineering, 2007, San Jose, California, United States

Abstract

Laser oscillation at 1315 nm on the I(²P_1/2) → I(²P_3/2) transition of atomic iodine has been obtained by a near resonant energy transfer from O₂(a¹&Dgr;) produced using a low-pressure oxygen/helium/nitric-oxide discharge. In the electric discharge oxygen-iodine laser (ElectricOIL) the discharge production of atomic oxygen, ozone, and other excited species adds levels of complexity to the singlet oxygen generator (SOG) kinetics which are not encountered in a classic purely chemical O₂(a¹&Dgr;) generation system. The advanced model BLAZE-IV has been introduced in order to study the energy-transfer laser system dynamics and kinetics. Levels of singlet oxygen, oxygen atoms and ozone are measured experimentally and compared with calculations. The new BLAZE-IV model is in reasonable agreement with O₃, O₂(b¹&Sgr;), and O atom, and gas temperature measurements, but is under-predicting the increase in O₂(a¹&Dgr;) concentration resulting from the presence of NO in the discharge. A key conclusion is that the removal of oxygen atoms by NOX species leads to a significant increase in O₂(a¹&Dgr;) concentrations downstream of the discharge in part via a recycling process, however there are still some important processes related to the NO_X discharge kinetics that are missing from the present modeling. Further, the removal of oxygen atoms dramatically inhibits the production of ozone in the downstream kinetics.

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Andrew D. Palla, J. W. Zimmerman, Brian S. Woodard, David L. Carroll, J. T. Verdeyen, Tyronne C. Lim, Wilson Terry Rawlins, Seonkyung Lee, Steven J. Davis, and W. C. Solomon "ElectricOIL discharge and post-discharge kinetics experiments and modeling", Proc. SPIE 6454, High Energy/Average Power Lasers and Intense Beam Applications, 64540I (14 February 2007); https://doi.org/10.1117/12.717646

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