Screening pulsing magnetic fields by the use of a circular cylindrical shell

This paper explores the problem of definition of screening efficiency by the use a circular cylindrical shell, which can be a hull of ship, a shell of the electronic equipment, wave-guides etc. The acting magnetic field is supposed parallel plate, i.e. in each fixed instant its quantity is identical to all points of any cross section of the cylinder, but is various for points of two next cross sections. At action on a shell of monochromatic magnetic field the screening activity is defined by calculation of a shell screening function. At action of a pulsing field the calculation of screening efficiency will be carried out with use of a shell screening pulsing function, which are defined, radiating from the previously obtained functions of screening of a monochromatic field. In the paper the results of calculation are compared with experiment.