Temperature dependent Raman spectra of ammonia ranging from 3150 cm−1 to 3810 cm−1 for combustion applications
KAUST DepartmentClean Combustion Research Center
Clean Combustion Research Center, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia.
Physical Science and Engineering (PSE) Division
Mechanical Engineering Program
KAUST Grant NumberURF/1/3715-01-01
Permanent link to this recordhttp://hdl.handle.net/10754/672115
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AbstractApplying in combustion research, Raman scattering technique can provide high accuracy and high precision measurements of temperature and major species concentrations. However detailed knowledge of the temperature dependent Raman spectra of the probed species is a precondition to realise the potential of high precision and accuracy of the technique. As a carbon free novel fuel, the knowledge of high temperature Raman spectra of ammonia is rarely reported. We measured the Raman spectra of ammonia ranging from 299 K to 760 K. The high resolution Raman spectra are excited with a continuous wave 532 nm laser and detected with an low aberration Schmidt-Czerny-Turner spectrometer. The temperature of probe volume was determined by the fitting of N2 Raman spectra. The Raman spectra of ammonia under different temperatures were quantitatively normalized to the same number density to research the temperature behavior of spectra. Within the Raman shift region from 3150 cm−1 to 3810 cm−1, the Raman intensity and the polarization anisotropy of vibrational modes ν1, ν3, and 2ν4 were reported. The relative intensity between ν1, ν3, and 2ν4 modes were also analyzed under different temperatures.
CitationYang, C., Ezendeeva, D., Yu, T., & Magnotti, G. (2021). Temperature dependent Raman spectra of ammonia ranging from 3150 cm−1 to 3810 cm−1 for combustion applications. Optics Express, 29(21), 33234. doi:10.1364/oe.437979
SponsorsKing Abdullah University of Science and Technology.
PublisherThe Optical Society