Abstract

Results are presented of the predictions of Mie’s series solution to the scattering of an electromagnetic plane wave from a dielectric sphere of index 1.333. Cases of size parameters near 200 and 500 are examined in detail in an attempt to understand the mechanism responsible for the backscattering of light. These calculations demonstrate that the backscattering is due mainly to the last few significant terms in the Mie expansion, which can be associated with geometrical rays grazing the droplet surface, or “surface waves.” Sharp periodic spikes in the dependence of the backscattered intensity are shown to be associated with very slightly damped surface waves of both polarizations involving hundreds of circumvolutions. The geometrically computed axial contribution to the backscattered light is shown to be present in the Mie results.

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  1. 1 H. C. van de Hulst, Light Scattering from Small Particles (John Wiley & Sons, Inc., New York, 1957), p. 231.
  2. Reference 1, p. 375.
  3. For a full description of the formulae used and procedure followed see A. J. Cox, Master's thesis, University of New Mexico (1965).
  4. Reference 1, Chap. 9.
  5. D. Deirmendjian, R. J. Clasen, and W. Viezee, J. Opt. Soc. Am. 51, 620 (1961).
  6. See Ref. 3.
  7. The authors wish to thank Dennis Hayes for suggesting and carrying out this computational check.
  8. H. C. van de Hulst, Ref. 1, p. 208.
  9. H. C. van de Hulst, Ref. 1, p. 30.

Clasen, R. J.

D. Deirmendjian, R. J. Clasen, and W. Viezee, J. Opt. Soc. Am. 51, 620 (1961).

Cox, A. J.

For a full description of the formulae used and procedure followed see A. J. Cox, Master's thesis, University of New Mexico (1965).

Deirmendjian, D.

D. Deirmendjian, R. J. Clasen, and W. Viezee, J. Opt. Soc. Am. 51, 620 (1961).

van de Hulst, H. C.

1 H. C. van de Hulst, Light Scattering from Small Particles (John Wiley & Sons, Inc., New York, 1957), p. 231.

H. C. van de Hulst, Ref. 1, p. 30.

H. C. van de Hulst, Ref. 1, p. 208.

Viezee, W.

D. Deirmendjian, R. J. Clasen, and W. Viezee, J. Opt. Soc. Am. 51, 620 (1961).

Other

1 H. C. van de Hulst, Light Scattering from Small Particles (John Wiley & Sons, Inc., New York, 1957), p. 231.

Reference 1, p. 375.

For a full description of the formulae used and procedure followed see A. J. Cox, Master's thesis, University of New Mexico (1965).

Reference 1, Chap. 9.

D. Deirmendjian, R. J. Clasen, and W. Viezee, J. Opt. Soc. Am. 51, 620 (1961).

See Ref. 3.

The authors wish to thank Dennis Hayes for suggesting and carrying out this computational check.

H. C. van de Hulst, Ref. 1, p. 208.

H. C. van de Hulst, Ref. 1, p. 30.

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