中文摘要：

采用激光诱导荧光技术在12200-13550cm^-1能量范围内研究了超声射流冷却下的硫化镍光谱．获得了4个具有转动结构的振转带，并被归属为基态至低激发态[12.4]^3∑-0-X^3∑0的跃迁．通过转动分析，确定了该低激发态的转动常数、同位素位移以及分子（平衡）常数．此外，还测量了这些振转带的寿命．

英文摘要：

Laser-induced fluorescence excitation spectra of jet-cooled NiS molecules were recorded in the energy range of 12200-13550 cm^-1. Four vibronic bands with rotational structure have been observed and assigned to the [12.4]^3∑-0-X^3∑0 transition progression. The relevant rotational constants, significant isotopic shifts, and （equilibrium） molecular parameters have been determined. In addition, the lifetimes of the observed bands have also been measured.