Automated light scattering system and a method for the in situ measurement of the index of refraction of soot particles

Journal Article · Tue Sep 01 04:00:00 EDT 1987 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1139361· OSTI ID:6364221

Charalampopoulos, T T

An automated laser light scattering system which uses a single detector to measure both classical and dynamic light scattering from soot particles in flames was designed, fabricated, and tested. Measurements of classical and dynamic light scattering along with extinction for a premixed methane/oxygen flame are presented, as a function of position in the flame. It is demonstrated that by introducing a theoretical relationship between the real and imaginary parts of the complex index of refraction, the optical properties of Rayleigh size soot particles can be directly inferred from such in situ measurements. The sensitivity of the inferred quantities to the measured parameters is assessed. Soot particles sizes, number densities and optical properties were simultaneously inferred. The potential for determining the in situ refractive indices of soot has been demonstrated.

• Research Organization: Mechanical Engineering Department, Louisiana State University, Baton Rouge, Louisiana 70803
• OSTI ID: 6364221
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 58:9; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKANES
AUTOMATION
COMBUSTION PRODUCTS
COMBUSTION PROPERTIES
DESIGN
EQUIPMENT
FABRICATION
FLAMES
HYDROCARBONS
LIGHT SCATTERING
METHANE
OPTICAL EQUIPMENT
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
PERFORMANCE TESTING
PHYSICAL PROPERTIES
REFRACTIVITY
SCATTERING
SOOT
TESTING