Light Scattering by Irregularly Shaped Particles

✍ Scribed by D. Deirmendjian (auth.), Donald W. Schuerman (eds.)

• Publisher: Springer US
• Year: 1980
• Tongue: English
• Leaves: 334
• Edition: 1
• Category: Library

✦ Synopsis

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.

✦ Table of Contents

Front Matter....Pages i-x
Some Remarks on Science, Scientists, and the Remote Sensing of Particulates....Pages 1-6
Focusing in on Particle Shape....Pages 7-24
Sensing Ice Clouds from Satellites....Pages 25-34
Lidar Visibility Measurements....Pages 35-38
Non-Spherical Particle Scattering: Air Force Applications....Pages 39-48
Particles Producing Strong Extinction in the Infrared....Pages 49-54
Shape of Raindrops....Pages 55-61
Atmospheric Ice Crystals....Pages 63-67
Physical Properties of Atmospheric Particulates....Pages 69-78
Some Characteristics of the Antarctic Aerosol....Pages 79-86
Examples of Realistic Aerosol Particles Collected in a Cascade Impactor....Pages 87-95
Absorption by Small Regular Non-Spherical Particles in the Rayleigh Region....Pages 97-102
Infrared Absorption Spectra of Non-Spherical Particles Treated in the Rayleigh-Ellipsoid Approximation....Pages 103-111
Scattering by Non-Spherical Particles of Size Comparable to a Wavelength: A New Semi-Empirical Theory....Pages 113-125
Scattering and Absorption by Wavelength Size Discs....Pages 127-134
Perturbation Approach to Light Scattering by Non-Spherical Particles....Pages 135-140
Exact Calculations of Scattering from Moderately-Nonspherical T n -Particles: Comparisons with Equivalent Spheres....Pages 141-152
Surface Waves in Light Scattering by Spherical and Non-Spherical Particles....Pages 153-164
Shifrin’s Method Applied to Scattering by Tenuous Non-Spherical Particles....Pages 165-168
Energy Conservation: A Test for Scattering Approximations....Pages 169-175
Electromagnetic Scattering from Two Identical Pseudospheres....Pages 177-190
Absorption by Particle Edges and Asperities....Pages 191-200
On the Scattering from Arbitrarily Shaped Inhomogeneous Particles — Exact Solution....Pages 201-206
Light Scattering by Hexagonal Columns and Plates....Pages 207-218
Scattering of Radiation by a Large Particle with a Rough Surface....Pages 219-225
The Microwave Analog Facility at Sunya: Capabilities and Current Programs....Pages 227-232
Observation of Light Scattering from Oriented Non-Spherical Particles Using Optical Levitation....Pages 233-235
The Effect of an Electric Field on the Backscattered Radiance of a Single Water Droplet....Pages 237-242
In Situ Light Scattering Techniques for Determining Aerosol Size Distributions and Optical Constants....Pages 243-246
Problems in Calibrating a Polar Nephelometer....Pages 247-254
Extinction Signatures of Non-Spherical/Non-Isotropic Particles....Pages 255-272
Scattering by Particles of Non-Spherical Shape....Pages 273-282
Phase Matrix Measurements for Electromagnetic Scattering by Sphere Aggregates....Pages 283-290
Reflectivity of Single Micron Size Irregularly Shaped Dust Grains....Pages 291-298
Biological Particles as Irregularly Shaped Scatterers....Pages 299-305
Inference of Scatterer Size Distribution from Single Scattering Matrix Data....Pages 307-318
Light Scattering by Irregularly Shaped Particles Versus Spheres: What are Some of the Problems Presented in Remote Sensing of Atmospheric Aerosols?....Pages 319-324
Back Matter....Pages 325-334

✦ Subjects

Characterization and Evaluation of Materials