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11 Light Emission from Flames

Part 1. Fundamentals and Safety

  1. Stephen A. Ciatti

Published Online: 15 JUL 2010

DOI: 10.1002/9783527628148.hoc011

Handbook of Combustion

Handbook of Combustion

How to Cite

Ciatti, S. A. 2010. Light Emission from Flames. Handbook of Combustion. 1:11:251–264.

Author Information

  1. Argonne National Laboratory, Transportation Technology, R&D Center, Argonne, IL, USA

Publication History

  1. Published Online: 15 JUL 2010


This chapter describes the radiation phenomena that occur during fuel/oxidizer reactions; specifically the ultraviolet (UV), visible, and infrared (IR) light that is emitted via a variety of mechanisms during combustion events. Significant information about combustion can be acquired by analyzing the light-emission profile of combustion events. Techniques such as emission spectroscopy, two-color optical pyrometry, radiation thermometry, and combustion visualization are all utilized to study combustion. Both, sooting and nonsooting flames can be studied effectively with light-emission techniques. The inherent advantage to utilizing emission-based techniques to study combustion is that they require only minimal access to the combustion event; only a method is needed for light to leave the measurement area, such as fiber optics, endoscopes and borescopes, and small windows. Explanations of each of these techniques and their advantages/disadvantages in different applications will be discussed.


  • Light emission;
  • chemiluminescence;
  • radiation;
  • diesel;
  • temperature measurement;
  • spectroscopy