Radial and longitudinal profiles of the electron paramagnetic resonance signal intensity of a single TE102 rectangular cavity: A three-dimensional surface plot for a point-like sample Original Research Article

Radial and longitudinal profiles of the electron paramagnetic resonance (EPR) signal intensity of a point-like sample inserted into a Bruker single TE102 rectangular cavity were computed and the three-dimensional surface plots presented for the set of the point-like samples situated, (i) at any available points, P(ρ∈〈0, b/2〉, φ∈〈0, 2π〉, x=0), of a circle with a radius, ρmax=b/2 (5.5 mm), which is located in the horizontal, central (y–z)-plane of the microwave cavity (a radial profile), and (ii) at any available points, P(ρ=b/4, φ∈〈0, 2π〉, x∈〈−a/2, a/2〉), of the cylindrical surface with a radius, ρ=b/4, and length, L=a (23.5 mm), which is concentric with the vertical, central x-axis of the microwave cavity (a longitudinal profile). The three-dimensional surface plots of the EPR signal intensity can be used for the theoretical prediction of the experimental response of the microwave cavity to a bulky sample: (i) for movement along (the longitudinal response); and (ii) for rotation around (the radial response) the vertical, central cavity x-axis.