Abstract
The technique of reconstructive tomography (RT) is a powerful method of obtaining local, spatially resolved volumetric emission coefficients from line integral data. The applicability of this technique as a diagnostic for nonuniform sources is studied using simulated data with and without noise. The major advantage of RT techniques is that they may be applied, without restriction, to highly asymmetric data as well as symmetric data. When applied to symmetric data, the technique appears to be less susceptible to noise than Abel inversion techniques. Also examined is a method of accounting for self-absorption under certain circumstances.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
K. Schofield and M. Steinberg, “Quantitative Atomic and Molecular Laser Fluorescence in the Study of Detailed Combustion Processes,”Opt. Eng. 20, 501–510 (1981).
H. F. Dobele and B. Ruckle, “Concentration Measurements of Metastable C Atoms in a Carbon Arc by Atomic Fluorescence Spectroscopy Using an ArF* Ultraviolet Laser,”Plasma Phys. 24, 1419–1428 (1982).
R. J. Hall and J. H. Stefflebeam, “Quantitative CARS Spectroscopy of CO2 and N2O,”Appl. Opt. 23, 4319–4327 (1984).
W. M. Shaub, J. W. Nibler and A. B. Harvey, “Direct Determination of Non-Boltzmann Vibrational Level Populations in Electric Discharges by CARS,”J. Chem. Phys. 67, 1883 (1977).
K. Bockasten, “Transformation of Observed Radiances into Radial Distribution of the Emission of a Plasma,”J. Opt. Soc. Am. 51, 943–947 (1961).
W. L. Barr, “Method for Computing the Radial Distribution of Emitters in a Cylindrical Source,”J. Opt. Soc. Am. 52, 885–888 (1962).
F. P. Chen and R. Goulard, “Retrieval of Arbitrary Concentration and Temperature fields by Multiangular Scanning Techniques,”J. Quant. Spectrosc. Radiat. Transfer,16, 819–827 (1976).
D. W. Blair, “An Analysis of Error Propagation in Abel Inversions of Spectral Emission-Absorption Data,”J. Quant. Spectrosc. Radiat. Transfer 14, 325–337 (1974).
R. Viskanta, P. J. Hommert and G. L. Groninger, “Spectral Remote Sensing of Temperature distribution in Semitransparent Solids Heated by an External Radiation Source,”Appl. Opt. 14, 428–437 (1975).
M. T. Chahine,J. Atmos. Sci. 29, 741 (1972).
R. A. Brooks and G. DiChiro, “Principles of Computer-Assisted Tomography (CAT) in Radiographic and Radioisotopic Imaging,”Phys. Med. Biol. 21, 689–732 (1976).
D. W. Sweeney and C. M. Vest, “Measurement of Three-Dimensional Temperature Fields above Heated Surfaces by Holographic Interferometry,”Int. J. Heat Mass Transfer 17, 1443–1454 (1974).
R. P. Kruger and T. M. Cannon, “The Application of Computer Tomography, Boundary Detection, and Shaded Graphics Reconstruction to Industrial Inspection”,Mater. Evaluat. 36, 75–80 (1978).
J. R. Fincke, M. A. Vince and C. L. Jeffery, “Measurement of Time-Averaged Density Distribution in Horizontal Multiphase Flow Using Reconstructive Tomography,”Measurements in Polyphase Flows 1982, American Society of Mechanical Engineers, New York (1982).
P. J. Emmerman, R. Goulard, R. J. Santoro, and H. G. Semerjian, “Multiangular Absorption Diagnostics of a Turbulent Argon-Methane Jet,”J. Energ. 4, 70–77 (1980).
R. J. Santoro, H. G. Semerjian, P. J. Emmerman, and R. Goulard, “Optical Tomography for Flow Field Diagnostics,”Int. J. Heat Mass Transfer 24, 1139–1150 (1981).
H. G. Semerjian, S. R. Ray and R. J. Santoro, “Laser Tomography for Diagnostics in Reacting Flows,” AIAA paper AIAA-82-0854, June 1982.
K. E. Bennett, G. W. Faris and R. L. Byer, “Experimental Optical Fan Beam Tomography,”Appl. Opt. 23, 2678–2685 (1984).
B. W. Stuck, “A New Proposal for Estimating the Spatial Concentration of Certain Types of Air Pollutants,”J. Appl. Opt. 67, 668–678 (1977).
R. Gordon, “A Tutorial on ART (algebraic reconstruction techniques),”IEEE Trans. Nucl. Sci. NS-21, 78–93 (1974).
G. Minerbo, “MENT: A Maximum Entropy Algorithm for Reconstructing a Source from Projection Data,”Comput. Graphics Image Process. 10, 48–68 (1979).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Fincke, J.R. Tomographic reconstruction of volume emission coefficients from line integral data. Plasma Chemistry and Plasma Processing 6, 127–141 (1986). https://doi.org/10.1007/BF00571272
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00571272