NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Coherent Backscattering in the Cross-Polarized ChannelWe analyze the asymptotic behavior of the cross-polarized enhancement factor in the framework of the standard low-packing-density theory of coherent backscattering by discrete random media composed of spherically symmetric particles. It is shown that if the particles are strongly absorbing or if the smallest optical dimension of the particulate medium (i.e., the optical thickness of a plane-parallel slab or the optical diameter of a spherically symmetric volume) approaches zero, then the cross-polarized enhancement factor tends to its upper-limit value 2. This theoretical prediction is illustrated using direct computer solutions of the Maxwell equations for spherical volumes of discrete random medium.
Document ID
20110022610
Document Type
Reprint (Version printed in journal)
Authors
Mischenko, Michael I. (NASA Goddard Inst. for Space Studies New York, NY, United States)
Mackowski, Daniel W. (Auburn Univ. AL, United States)
Date Acquired
August 25, 2013
Publication Date
January 31, 2011
Publication Information
Publication: Physical Review A
Volume: 83
Issue: 1
ISSN: 1050-2947
Subject Category
Optics
Report/Patent Number
GSFC.JA.5139.2011
Distribution Limits
Public
Copyright
Other