Laser spectroscopy was used for the investigation of the Zeeman-hf structure of 22 lines of atomic niobium in the visible region between 573.7 and 649.4 nm. We used two methods of laser absorption spectroscopy: laser induced fluorescence (LIF) method and optogalvanic spectroscopy (OG). The source of niobium atoms was a hollow cathode discharge tube. The magnetic field of approximately 800 G was generated by a permanent neodymium magnet. We determined experimentally for the first time the Lande $g_J$ factors for 10 levels. We also verified earlier experimental data on the hf structure as well as data from the NIST database regarding Lande $g_J$ factors.

激光光谱用于研究573.7nm至649.4nm之间可见区域中22条原子铌的Zeeman-hf结构。我们使用了两种激光吸收光谱方法：激光诱导荧光（LIF）方法和光电电流谱（OG）。铌原子的来源是空心阴极放电管。永磁钕磁铁产生大约800 G的磁场。我们首次通过实验确定了Lande$G_{Ĵ}$10个级别的因素。我们还验证了有关hf结构的早期实验数据以及NIST数据库中有关Lande的数据$G_{Ĵ}$ 因素。