原子各个同位素间跃迁强度的关系

在小信号高分辨激光光谱中，当不同Ｊ态在超精细结构态Ｆ的混合可以忽略时，起源于同一个Ｊ能级的原子各个同位素总电偶极跃迁强度正比于它们的丰度，在一个Ｆ－Ｆ’跃迁内的强度分布可以用群论计算出来，用内调制激光光谱方法测量轴的实验证实了理论的结果。

Transmition Intensity Relationship Between Different Isotopes of Atoms

The total electric-dipole transition intensity originated from the same J-manifold in the small signal high resolution laser spectroscopy between different isotopes of atoms is proportional to their abundance providing that J-mixing from different J states into a hyperfine structure F state is negligible. The intensity distribution of single F-F′ transition can be calculated from group theory. Experiments of uranium using intermodulated laser spectroscopy confirmed the theoretical prediction.