Plasma density distribution in an adiabatic trap with neutral beam injection

Proposed is the method of solution of the drift kinetic equation for the ion distribution function, allowing to regard to a magnetic field and a neutral atom beam real geometry in the problem of plasma accumulation in a trap. The results of numerical calculations of ion distribution function, created by a plasma source in the trap are presented along with those of the plasma density space distribution formed as a result of neutral atom beam injection into the trap with a quadrupole magnetic field of a ''baseball'' type. It is shown that if the ion distribution function of plasma is not washed out too quickly by cyclotron low-frequency oscillations, the drift-cone instability in the above trap will be stabilized