中文摘要：

介绍了利用拉格朗日方程求解离子在分阱系统中的集体振动模式的基本原理,并具体计算了分阱系统中3个离子的集体振动模式.

英文摘要：

The basic method for calculating the collective vibrational modes of ions trapped in a multi-trap system is presented by solving Lagrange equation and the vibrational modes of three ions trapped in the multi-trap system are calculated concretely.