Cross sections of coaxial line.

(A) Outline of electric (E) and magnetic (H) field lines; note radial the decrease in H-density. The outer diameter of the innner conductor is 2a and the inner diameter of the outer conductor is 2b. (B) Definition of eccentricity of an off-axis inner conductor. (C) Illustration of a coaxial cell in which a paramagnetic sample (white area) is contained in a diamagnetic holder (grey area).