Author/Authors :
Goldman، نويسنده , , A. and Rahinov، نويسنده , , I. and Cheskis، نويسنده , , S. and Lِhden، نويسنده , , B. and Wexler، نويسنده , , S. and Sengstock، نويسنده , , K. and Baev، نويسنده , , V.M.، نويسنده ,
Abstract :
Fiber laser intracavity spectroscopy (FLICAS) with Er-doped fiber laser has been applied for the first in situ detection of ammonia and hydrogen cyanide in a low pressure (30 Torr) stoichiometric methane/nitrogen/oxygen flame doped with 0.13–1.36% of NH3. High resolution spectra of NH3 and HCN have been recorded in the range of 1.5 μm (6440–6540 cm−1). The minimum detectable concentration of HCN and NH3 at a laser pulse duration of 8 μs and room temperature is 1 × 1013 molecule/cm3. The method can be used for in situ detection of many other molecules in the hostile combustion environment.
