SCATTERING THEORY OF SMALL-PARTICLE ABSORPTION - CYCLOTRON AND MAGNETOPLASMA RESONANCE

The excitation of a small ellipsoidal sample in an electromagnetic cavity is treated quantitatively as a two-wave Rayleigh-scattering problem. Application to the special case of a solid-state magnetoplasma shows that magnetoplasma resonance occurs when κ′=-(1L-1), with strength proportional to 1κ′′, and approximate half-width κ′′, where κ=κ′+iκ′′ is the net bulk dielectric constant of the material comprising the ellipsoid, and L is the mks depolarization factor. New methods of deducing transport parameters from magnetoplasma resonance are outlined. © 1969 The American Physical Society.