Abstract The (1,0) band of the [13.10] Ω = 1 − X 3Σ–0+ transition of WS has been observed and recorded at Doppler-limited resolution using intracavity laser absorption spectroscopy detected with a Fourier-transform spectrometer (ILS–FTS). The tungsten sulfide molecules were produced in the plasma discharge formed when 0.35 A of RF current were applied to a W-lined Cu hollow cathode in an atmosphere that was 0.1% CS2, ~30% H2, and ~70% Ar at a total pressure of 1 torr. The hollow cathode was located within the resonator cavity of a tunable Ti:Sapphire laser, causing molecular absorption to be superimposed upon the broadband profile of the laser. This profile was detected using a Bruker IFS 125 M spectrometer using an instrument resolution of 0.01 cm−1. The ILS-FTS spectrum was analyzed using PGOPHER. Experimental line positions from the laser induced fluorescence (LIF) spectrum of WS [Tsang et al., J. Mol. Spec., 359, 31 (2019)] were included in the fit, and a limited Dunham model was built in PGOPHER to characterize the X 3Σ–0+ ground state of WS. The rotational coverage of the ground state is expanded from 0

中文翻译：

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用傅里叶变换检测硫化钨的腔内激光光谱，WS：分析 [13.10] Ω=1 – X 3Σ–0+ 跃迁的 (1,0) 带

摘要 WS 的 [13.10] Ω = 1 − X 3Σ–0+ 跃迁的 (1,0) 带已被观察并记录在多普勒限制分辨率下，使用傅立叶变换光谱仪 (ILS– FTS）。硫化钨分子在等离子放电中产生，当 0.35 A 的射频电流在总压下为 0.1% CS2、~30% H2 和~70% Ar 的气氛中施加到 W 衬里的 Cu 空心阴极时1 托。空心阴极位于可调谐钛蓝宝石激光器的谐振腔内，导致分子吸收叠加在激光器的宽带分布上。使用 Bruker IFS 125 M 光谱仪使用 0.01 cm-1 的仪器分辨率检测该轮廓。使用 PGOPHER 分析 ILS-FTS 光谱。WS 激光诱导荧光 (LIF) 光谱的实验线位置 [Tsang et al., J. Mol. Spec., 359, 31 (2019)] 包含在拟合中，并且在 PGOPHER 中构建了一个有限的 Dunham 模型来表征 WS 的 X 3Σ-0+ 基态。基态的旋转覆盖范围从0扩大