The electromagnetic field generation by an ionizing radiation source in air and the distortion of these fields caused by a conducting object present are considered. The self-consistent axially symmetric 2D models taking into account the object effect on EMF generated and the influence of these fields on electron kinetics under plasma oscillations are developed for the cylindrical and conic objects. The boundary conditions for conducting surfaces of these objects allowing creation the uniform numerical method and the parallel codes to perform numerical experiments by using multiprocessor computers are formulated. The algorithms developed are used to investigate the distortions of the electromagnetic field with an object present. In particular, amplitude and frequency features of the fields are analyzed, values of the transition layers from the distorted to the undisturbed fields are estimated, as well as amplitude and frequency parameters of the fields inside an object with electrically transparent areas are calculated.

Mathematical modelling in actual problems of science and technics