Raman-based measurements of greenhouse activity of combustion flue gases
Kazemifar, Farzan
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https://hdl.handle.net/2142/26390
Description
Title
Raman-based measurements of greenhouse activity of combustion flue gases
Author(s)
Kazemifar, Farzan
Issue Date
2011-08-26T15:34:12Z
Director of Research (if dissertation) or Advisor (if thesis)
Kyritsis, Dimitrios C.
Department of Study
Mechanical Sci & Engineering
Discipline
Mechanical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Raman scattering
Infrared activity
Greenhouse gases
Combustion
Abstract
Gases that are capable of absorbing and emitting infrared radiation due to their molecular structure are known as infrared active gases. Infrared activity is the underlying reason for the greenhouse effect. Hence, greenhouse gases are all infrared active. The vibrational/rotational structure that makes the molecule infrared active, also causes the energy exchange and the corresponding wavelength shift during Raman scattering.
In this work, Raman scattering spectrum and infrared emission intensity in CO2-containing atmospheric jets at various temperatures and concentrations were measured. The results show that there is a linear relationship between Raman scattering intensity and infrared emission intensity. The linear relationship between Raman signal and infrared emission intensity indicates that Raman scattering can be used as a strong technique for measurement of greenhouse gases.
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