Laser-Induced Fluorescence Detection of Hot Molecular Oxygen in Flames Using an Alexandrite Laser
نویسندگان
چکیده
منابع مشابه
Laser-induced fluorescence of formaldehyde hot bands in flames.
Laser-induced fluorescence and excitation spectra of formaldehyde in the A-X 4(1)(0) band at 370 nm are recorded in the primary flame front of a Bunsen flame. An examination of partition functions shows that this excitation can minimize temperature bias for formaldehyde in situ diagnostic measurements.
متن کاملNH2 detection in fuel-nitrogen combustion using an Alexandrite laser
A scheme for NH2 detection by means of laser-induced fluorescence (LIF) with excitation in the ultraviolet-blue regime around 385 nm, in particular using the second harmonic of a solid-state Alexandrite laser, is presented. This alternative provides interference-free detection with improved signal compared with previously employed concepts based on Nd:YAG and dye-laser excitation in the visible...
متن کاملLaser-induced fluorescence determination of temperatures in low pressure flames.
Spatially resolved temperatures in a variety of low pressure flames of hydrogen and hydrocarbons burning with oxygen and nitrous oxide are determined from OH, NH, CH, and CN laser-induced fluorescence rotational excitation spectra. Systematic errors arising from spectral bias, time delay, and temporal sampling gate of the fluorescence detector are considered. In addition, we evaluate the errors...
متن کاملCarbon dioxide UV laser-induced fluorescence in high-pressure flames
Laser-induced fluorescence (LIF) of carbon dioxide is investigated with excitation between 215 and 255 nm with spectrally resolved detection in 5–40 bar premixed CH4/O2/Ar and CH4/air flat-flames at fuel/air ratios between 0.8 and 1.9. The LIF signal consists of a broad (200–450 nm) continuum with a faint superimposed structure, and this signal is absent in similar H2/O2/Ar flames. There is str...
متن کاملOh Concentration Profiles over Alumina, Quartz, and Platinum Surfaces Using Laser-induced Fluorescence Spectroscopy in Low-pressure Hydrogen/oxygen Flames
Laser-induced fluorescence measurements of OH radical concentration are performed in the post-flame gaseous region of a stoichiometric H2=O2 mixture combusting at 20 Torr. The measurements are taken near surfaces of three different materials [a-alumina (Al2O3), quartz (SiO2), and platinum (Pt) on alumina] at different surface temperatures (from 700 to 1100 K). A comparative analysis of some of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Spectroscopy
سال: 2014
ISSN: 0003-7028,1943-3530
DOI: 10.1366/14-07512