This paper describes the theory, development, and experimental application of an instrument designed to measure small relative temperature fluctuations associated with traveling acoustic waves in a combustion plasma by observing potassium line radiation. The instrument has been used successfully to measure relative temperature fluctuations of <0.1% in a combustion plasma under conditions representative of magnetohydrodynamic power generation.
© 1984 Optical Society of America
Original Manuscript: December 5, 1983
Published: June 1, 1984
Tad D. Simons, "Optical fiber luminosity probe for plasma temperature fluctuation measurements," Appl. Opt. 23, 1807-1811 (1984)