On the boundaries of a possible plasma confinement region in the electro discharge magnetic trap

The electrical-discharge trap (EDT) is based on the simplest magnetic system formed by two radius loops with the equal-direction currents spaced along the common axis passing through their centers. The boundaries of the plug confinement area in the EDT has the form of a hollow thick-wall shell the volume where of significantly exceeds the plasma volume realized in the experiments where filling up of local plug traps with plasma takes place