Numerical simulation for particle acceleration and trapping by an electromagnetic wave

The interaction between particles and an electromagnetic (EM) wave is investigated numerically in the system of particle Vp x Β acceleration by the EM wave. Numerical simulations show that the particle acceleration mechanism works well in the case of the appropriate number density of the imposed particles. When the interaction between particles and the wave is too strong, a part of the trapped and accelerated particles is detrapped. A condition is also presented for the efficient particle acceleration and trapping by the EM wave. (author)