General ignition conditions for magnetized target fusion (MTF) in cylindric
al geometry are formulated. To attain an MTF ignition state, the deuterium-
tritium fuel must be compressed in the regime of self-sustained magnetized
implosion (SSMI). We analyze the general conditions and optimal parameter v
alues required for initiating such a regime, and demonstrate that the SSMI
regime can already be realized in cylindrical implosions driven by similar
to 100 kJ beams of fast ions. (C) 2001 Elsevier Science B.V. All rights res
erved.