Modeling of the ElectriCOIL system

David L. Carroll, Joseph T. Verdeyen, Darren M. King, Brain S. Woodard, Lawrence W. Skorski, Joseph W. Zimmerman, Wayne C. Solomon

Research output: Contribution to journalArticlepeer-review


Theoretical studies have indicated that sufficient fractions of O2(1Δ) may be produced in an electrical discharge that will permit lasing of an electric discharge oxygen-iodine laser (ElectriCOIL) system. Results of those studies along with more recent experimental results show that electric excitation is a very complicated process that must be investigated with advanced diagnostics along with modeling to better understand this highly complex system. A kinetic package appropriate for the ElectriCOIL system is presented and implemented in the detailed electrodynamic GlobalKin model and the Blaze II chemical laser modeling code. A parametric study with the Blaze II model establishes that it may be possible to attain positive gain in the ElectriCOIL system, perhaps even with subsonic flow. The Blaze II model is in reasonable agreement with early gain data. Temperature is a critical issue, especially in the subsonic cases, and thus it appears that supersonic flow will be important for the ElectriCOIL system. Simulations of a supersonic ElectriCOIL system indicate that it may be possible to attain reasonable performance levels, even at low yield levels of 20% or less. In addition, pre-dissociation of the iodine is shown to be very important for the supersonic flow situation.

Original languageEnglish (US)
Pages (from-to)1150-1159
Number of pages10
JournalIEEE Journal of Quantum Electronics
Issue number9
StatePublished - Sep 2003


  • Chemical oxygen-iodine laser
  • Chemical oxygen-iodine laser (COIL)
  • Discharge oxygen-iodine laser (DOIL)
  • Electric discharge oxygen-iodine laser (ElectriCOIL)
  • Radio frequency (RF) excitation of oxygen
  • Singlet-delta oxygen

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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