Kaseman, TremayneObyrne, SeanYan, WeiFletcher, John E.2025-12-312025-12-31ORCID:/0009-0007-2076-6766/work/162948410https://hdl.handle.net/1885/733797748A system for time-resolved spectroscopic analysis of pulsed nanosecond discharge emission in various gases is described and preliminary results using argon test gas are presented. Time-resolved emission intensity measurements of argon discharges show a rapid drop of emission line intensity in time and a variation in the rate of decay between the emission lines. Methods of improving the system with laser diode absorption spectroscopy, and comparison with computed emission lines are discussed.This work was supported by a Spitfire Memorial Fellowship, provided to Dr O’Byrne by the Spitfire Association of Australia. The initial work was funded through a UNSW Engineering co-operation grant.en201310.2514/6.2013-249684883479112