Abstract:
A Russian translation of this article appeared in Kvantovaya Elektron. (Moscow)10, 2166-2228 (November 1983) PACS numbers: 28.50.Re, 52.50.Jm The original paper was published in Nuclear Technology Fusion 1, 302-358 (July 1981), available from The American Nuclear Society, 555 N. Kensington Avenue, La Grand Park, Illinois 60525.