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Three-wavelength light transmission technique to measure smoke particle size and concentration.

Authors
Cashdollar-KL; Lee-CK; Singer-JM
Source
Appl Opt 1979 Jun; 18(11):1763-1769
NIOSHTIC No.
10009859
Abstract
This paper describes an optical technique and instrumentation for measuring the average particle size and mass concentration of smoke. Transmission through the smoke at three wavelengths is measured using a white light source and a compact, three-wavelength detector assembly. Sizes and concentrations are then calculated from the transmission data using mie theory. Graphs of the calculated mie extinction coefficients are presented for several complex refractive indices. This three-wavelength optical technique was used to study smoke from a wood-tunnel fire, and the results are compared with those of other sizing techniques.
Keywords
Smoke-inhalation; Particle-counters; Light-properties; Light-waves; Wood-dusts; Optical-analysis; Optics
CODEN
APOPAI
Publication Date
19790601
Document Type
OP; Journal Article
Fiscal Year
1979
NTIS Accession No.
NTIS Price
Identifying No.
OP 56-79
Issue of Publication
11
ISSN
0003-6935
NIOSH Division
PRC
Source Name
Applied Optics
State
PA
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