1. Chongqing University, Chongqing;
2. Chongqing Jiaotong Institute, Chongqing
Abstract:
In this paper, the Poincaré and Poincaré-Cartan integral invariants in nonconservative systems are established. According to the integral invariant, he non-linear oscillation of particles in 3-folded symmetry spiral sector cyclotron is investigated, It turns out that the method is successful.