The strong precipitation boundary  of different energy 
particles under the Tsyganenko-89 magnitosphere model

Kuznetsov S.N., Rybakov A.Yu.
(Institute of Nuclear Physics, Moscow State University, Moscow, 
Russia)

We determined nonadiabatics conditions of energetic particle motion 
in the framework of Tsyganenko-89 magnitospheric model for Kp = 1; 3; 
5. In our calculations we used central trajectory (CT) as a model of 
guide center trajectory. CT is such the trajectory along which a 
particle can come the dipol center. We analysed dependences of strong 
particle precipitation along drift trajectory on invariant latitude, 
MLT, particle energy. The results obtained were compared to 
experimental data on low energy cosmic ray penetration and trapped 
particle strong precipitation.