Magnetic absorption of electromagnetic waves by small metallic particle of ellipsoidal form

The magnetic absorption of electromagnetic waves by a small metallic particle of an ellipsoidal form at frequencies higher and lower than the frequency of an free path electron between the particle walls is studied. The diffuse reflection of the electron from an intrinsic surface of the particle was chosen as the boundary conditions. For the case, where the skin-depth is great compared to the typical sizes of the particle, analytical expressions are derived to determine the dependence of the energy absorbed by the particle on its form and orientation with respect to the direction of incident radiation. The low-frequency absorption by small metallic particle is analyzed in details for the first time. For particles in the form of oblate and prolate ellipsoids of revolution it is shown for which of their initial sizes and incident polarizations, the magnetic absorption becomes predominant in comparison with the electrical one