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Flame Characterization Using a Tunable Solid-State Laser with Direct UV PumpingTunable solid-state lasers with direct UV pumping, based on d-f transitions of rare earth ions incorporated in wide band-gap dielectric crystals, are reliable sources of laser radiation that are suitable for excitation of combustion-related free radicals. We have employed such a laser for analytical flame characterization utilizing Laser-Induced Fluorescence (LIF) techniques. LIF spectra of alkane-air flames (used for studying combustion processes under normal and microgravity conditions) excited in the region of the A-X (0,0) OH-absorption band have been recorded and found to be both temperature-sensitive and positionally-sensitive. In addition, also clearly noticeable was the sensitivity of the spectra to the specific wavelength used for data registration. The LiCAF:Ce laser shows good prospects for being able to cover the spectral region between 280 and 340 nm and therefore be used excitation of combustion-intermediates such as the hydroxyl OH, methoxy CH30 and methylthio CH3S radicals.
Document ID
19960052310
Document Type
Conference Paper
Authors
Kamal, Mohammed M.
(Howard Univ. Washington, DC United States)
Dubinskii, Mark A.
(Howard Univ. Washington, DC United States)
Misra, Prabhakar
(Howard Univ. Washington, DC United States)
Date Acquired
August 17, 2013
Publication Date
July 1, 1996
Publication Information
Publication: HBCUs Research Conference Agenda and Abstracts
Subject Category
Inorganic And Physical Chemistry
Report/Patent Number
Paper-14
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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