Physical Sciences Inc. Publications Abstract: Next Generation Diagnostics for COIL: New Approaches for Measuring Critical Parameters

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Abstract: Next Generation Diagnostics for COIL: New Approaches for Measuring Critical Parameters

S.J. Davis, W.T. Rawlins, W.J. Kessler, S. Lee, A.J.R. Hunter, M. Silva, "Next Generation Diagnostics for COIL: New Approaches for Measuring Critical Parameters ," presented at XV International Symposium on Gas Flow and Chemical Lasers and High Power Lasers Conference (Prague, Czech Republic) , (30 August - 3 September2004).

This paper was published in XV International Symposium on Gas Flow and Chemical Lasers and High Power Lasers Conference, and is made available as an electronic reprint (preprint) with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Abstract

In this paper we discuss several sensitive diagnostics that have been specifically developed for application to COIL andother iodine laser concepts such as AGIL and DOIL. We briefly cover the history of some important diagnostics including recently–developed diode laser sensors for a variety of parameters including: water vapor concentration, singlet oxygen yield, small signal gain, and translational temperature. We also discuss new developments and extensions of prior capabilities including: an ultra-sensitive diagnostic for I2 dissociation, a new monitor for singlet oxygen yield, and a novel diode laser-based imaging system for simultaneous, multipoint spatial distributions of species concentration and temperature. Finally, we mention how these diagnostics have been successfully applied to the emerging DOIL technology.

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