Light Scattering by Irregularly Shaped Particles

Donald W. Schuerman (Autor)

Buch | Hardcover

344 Seiten

1980
Kluwer Academic/Plenum Publishers (Verlag)
978-0-306-40421-4 (ISBN)

Infos

This volume contains most of the invited papers presented at the International Workshop on Light Scattering by Irregularly Shaped Particles held on June 5-7, 1979. at the State University of New York at Albany (SUNYA). Over seventy participants representing many dis- ciplines convened to define some of the ever-increasing number of resonant light-scattering problems associated with particle shape and to relate their most recent investigations in this field. It is obvious from the two introductory papers that an investi- gator's primary discipline determines his/her approach to the light- scattering problem. The meteorologist, Diran Deirmendjian, advocates an empirical methodology: to model the scattering by atmospheric aerosols, using equivalent spheres as standards, in the most effi- cient and simplest manner that is consistent with remote sensing, in situ, and laboratory* data. Because of the almost infinite variety of particle shapes, he questions not only the possibility but even the usefulness of the exact solution of scattering by a totally arbitrary particle. The astrophysicist, J.
Mayo Greenberg, is primarily concerned with the information content carried by the scattered light because this radiation is the sole clue to under- standing the nature of interstellar dust. What measurements (polar- ization, color dependence, etc *** ) should be made to best determine a given particle characteristic (size, surface roughness, refractive index, etc *** )? Thus, he considers the physics of the scattering process to be of paramount interest.

Inhalt

1: Introduction.- Some Remarks on Science, Scientists, and the Remote Sensing of Particulates.- Focusing in on Particle Shape.- 2: User Needs.- Sensing Ice Clouds from Satellites.- Lidar Visibility Measurements.- Non-Spherical Particle Scattering: Air Force Applications.- Particles Producing Strong Extinction in the Infrared.- 3: Specific Particle Descriptions.- Shape of Raindrops.- Atmospheric Ice Crystals.- Physical Properties of Atmospheric Particulates.- Some Characteristics of the Antarctic Aerosol.- Examples of Realistic Aerosol Particles Collected in a Cascade Impactor.- 4: Theoretical Methods.- Absorption by Small Regular Non-Spherical Particles in the Rayleigh Region.- Infrared Absorption Spectra of Non-Spherical Particles Treated in the Rayleigh-Ellipsoid Approximation.- Scattering by Non-Spherical Particles of Size Comparable to a Wavelength: A New Semi-Empirical Theory.- Scattering and Absorption by Wavelength Size Discs.- Perturbation Approach to Light Scattering by Non-Spherical Particles.- Exact Calculations of Scattering from Moderately-Nonspherical Tn-Particles: Comparisons with Equivalent Spheres.- Surface Waves in Light Scattering by Spherical and Non-Spherical Particles.- Shifrin's Method Applied to Scattering by Tenuous Non-Spherical Particles.- Energy Conservation: A Test for Scattering Approximations.- Electromagnetic Scattering from Two Identical Pseudospheres.- Absorption by Particle Edges and Asperities.- On the Scattering from Arbitrarily Shaped Inhomogeneous Particles - Exact Solution.- Light Scattering by Hexagonal Columns and Plates.- Scattering of Radiation by a Large Particle with a Rough Surface.- 5: Experimental Methods.- The Microwave Analog Facility at SUNYA: Capabilities and Current Programs.- Observation of Light Scattering from Oriented Non-Spherical Particles Using Optical Levitation.- The Effect of an Electric Field on the Backscattered Radiance of a Single Water Droplet.- In-Situ Light Scattering Techniques for Determining Aerosol Size Distributions and Optical Constants.- Problems in Calibrating a Polar Nephelometer.- 6: Experimental Results.- Extinction Signatures of Non-Spherical/Non-Isotropic Particles.- Scattering by Particles of Non-Spherical Shape.- Phase Matrix Measurements for Electromagnetic Scattering by Sphere Aggregates.- Reflectivity of Single Micron Size Irregularly Shaped Dust Grains.- Biological Particles as Irregularly Shaped Scatterers.- 7: Inversion and Information Content.- Inference of Scatterer Size Distribution from Single Scattering Matrix Data.- Light Scattering by Irregularly Shaped Particles Versus Spheres: What Are Some of the Problems Presented in Remote Sensing of Atmospheric Aerosols?.- Participants.

Produkt-Details

• Zusatzinfo: biography
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Geowissenschaften ► Meteorologie / Klimatologie
• Themenwelt: Technik ► Maschinenbau
• ISBN-10: 0-306-40421-4 / 0306404214
• ISBN-13: 978-0-306-40421-4 / 9780306404214
• Zustand: Neuware