磁场中的原子

Atoms in Magnetic Fields

本文简要地描述了关于磁场中原子问题的研究进展，介绍了此问题与可积性和混沌之间的关系，并着重说明了电离阈附近吸收谱振荡现象的封闭轨道理论．

Recent developments of studies on the problem of atoms in magnetic fields and its co- nnection with integrability and chaos are briefly discussed. The closed orbit theory for the oscillatory absorption spectra near ionization threshold is explained in detail.