Diode-laser absorption tomography is described with which the spatial temperature and the atomic number density distribution of a 3-kW class arcjet can be derived simultaneously by reconstruction of the absorption coefficient field of the arcjet’s argon exhaust plume. One can perform various parameter measurements by changing the arcjet’s mass-flow rates and discharge currents. The maximum temperature and atomic number density increase with the mass-flow rate and the discharge current. The trend for increase is not always found for a specific input power, although at a fixed mass-flow rate the power increases at that rate.
© 2001 Optical Society of America
Feng-Yuan Zhang, Toshitaka Fujiwara, and Kimiya Komurasaki, "Diode-Laser Tomography for Arcjet Plume Reconstruction," Appl. Opt. 40, 957-964 (2001)