국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Laser-Induced Incandescence: Detection Issues
저자	Randall L. Vander Wal
Keyword	Laser-induced incandescence (LII)
URL	http://gltrs.grc.nasa.gov/reports/1996/CR-198470.pdf
보고서번호	NASA CR-198470
발행년도	1996
출처	NASA Glenn Research Center
ABSTRACT	Experimental LII measurements were performed in a laminar gas-jet flame to test the sensitivity of different LII signal collection strategies to particle size. To prevent introducing a particle size dependent bias in the LII signal, signal integration beginning with the excitation laser pulse is necessary. Signal integration times extending to 25 or 100쟮sec after the laser pulse do not produce significant differences in radial profiles of the LII signal due to particle size effects with longer signal integration times revealing a decreased sensitivity to smaller primary particles. Long wavelength detection reduces the sensitivity of the LII signal to primary particle size. Excitation of LII using 1064쟮m light is recommended to avoid creating photochemical interferences thus allowing LII signal collection to occur during the excitation pulse without spectral interferences.