Development of the EM Field in a Shielding Enclosure with Aperture after Interference Caused by a Subnanosecond High-Power Parallelly Polarized EM Plane Wave Pulse

Due to the increase in threat of attacks with high-power electromagnetic (EM) pulses, there is great interest metallic enclosures high shielding effectiveness (SE). Necessary technological apertures these reduce their effectiveness. Understanding penetration and internal propagation EM pulses into an apertured enclosure fundamental assessing SE enclosure. In present paper, results numerical simulations development field a aperture after interference subnanosecond plane wave pulse parallel polarization (having duration 0.3558 ns amplitudes electric magnetic fields 106 V/m 2.6 × 103 A/m, respectively) are presented. The obtained include 3D 2D images , vector maps developed inside enclosure, time-varying distributions charges formed on inner walls They revealed mechanism formation caused by parallelly polarized pulse. has form structures. superposition incident field, which entered through way described geometrical (ray) optics, generated edges sides surface current strongest structures decrease non-monotonically about 0.7 105 200 A/m at t = 5 ns. We found that points subjected disturbance long series we have called pulses. lower than those Nevertheless, they can pose severe hazard due large number (about 900 30 ns). This means change character when used as shield.