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强磁场中的Ｃｓ原子有较大的超精细塞曼（Ｚｅｅｍａｎ）分裂，实验用频率可调谐的窄线宽半导体激光调谐到各超精细塞曼能级上进行光泵浦，利用稳态吸收谱方法研究了原子的光泵浦。表明基态超精细相互作用的碰撞修正项导致的弛豫跃迁是谱形状和电子自旋极化新特征的根缘。同时提出了强场下极化度的一种测量方法。
The Cs atoms in a strong magnetic field have a large Zeeman splitting. The experimental tunable narrow-linewidth semiconductor laser is tuned to each ultra-fine Zeeman level for optical pumping, and the steady-state absorption spectrum Methods The atom optical pumping is studied. It is shown that the relaxation transitions caused by collisional correction terms of ground state hyperfine interactions are the root of new spectral shapes and new features of electron spin polarization. At the same time, a method of measuring the polarization degree in strong field is proposed.