Photophoresis of irradiated spheres: Absorption centers

W. M. Greene, R. E. Spjut, E. Bar-Ziv, A. F. Sarofim, J. P. Longwell

Research output: Contribution to journalArticlepeer-review

61 Scopus citations


The source function describing the distribution of the power dissipation inside irradiated spherical particles is evaluated and is shown to be sensitive to minor errors in evaluating the Ricatti-Bessel functions used in describing the electric field within the particle. Errors in the functions that lead to only 1 or 2% errors in the total rate of energy absorption completely distort the temperature distribution within a particle and the associated photophoretic force. Representative calculations of the source function are provided for size parameters in the range 0.5 <i7rD/X < 20 for selected refractive indices (n = 1.5-5 for k = 0.2, k = 0.01-10 for n = 1.3-3.0).

Original languageEnglish
Pages (from-to)998-1004
Number of pages7
JournalJournal of the Optical Society of America B: Optical Physics
Issue number6
StatePublished - 1 Jan 1985
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics


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