Extinction efficiency of obliquely and randomly oriented infinite cylinders

Ariel Cohen*, Pinhas Alpert

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The extinction efficiency is calculated for a volume containing randomly oriented long circular cylinders. The results are compared with the extinction efficiency of spheres with the same refractive index and are shown to be almost identical. Special attention is given to a corrected definition of the extinction efficiency for obliquely oriented cylinders with respect to the incident radiation direction. The corrected definition presented here is justified by use of the physical concept of the extinction efficiency as used in the case of other scatterers such as spheres. Calculations are presented for a polarized incident light (normal to the incident plane) when discussing the definition of the extinction efficiency. For the randomly oriented particles the incident light is assumed to be unpolarized.

Original languageEnglish
Pages (from-to)8262-8264
Number of pages3
JournalJournal of Applied Physics
Issue number12
StatePublished - 1979
Externally publishedYes


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