Electromagnetic Low-Frequency Dipolar Excitation of Two Metal Spheres in a Conductive Medium

Figure 3

The real and the imaginary parts of the approximated low-frequency scattered magnetic field 𝐇 for the orders 𝑛=0,2,3. The two spheres have different radii 𝛼₁=25m and 𝛼₂=50m, while their centers are at the somewhat far distance 𝑑=100m. The magnetic dipole is located at (𝑥₁₀,𝑥₂₀,𝑥₃₀)=(200m,0m,0m) and the measurement line probe is placed at (𝑥_1𝑝,𝑥_2𝑝,𝑥_3𝑝)=(0m,200m,[−400,400]m), obtaining the field on the 𝑥₃-axis.

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