Rotational-vibrational transitions of the fundamental vibrational modes of the 12C14N+ and 12C15N+ cations have been observed for the first time using a cryogenic ion trap apparatus with an action spectroscopy scheme. The lines P(3) to R(3) of 12C14N+ and R(1) to R(3) of 12C15N+ have been measured, limited by the trap temperature of approximately 4 K and the restricted tuning range of the infrared laser. Spectroscopic parameters are presented for both isotopologues, with band origins at 2000.7587(1) and 1970.321(1) cm-1, respectively, as well as an isotope independent fit combining the new and the literature data.

中文翻译：

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CN+基本振动带的高分辨率红外作用光谱

使用具有作用光谱方案的低温离子阱装置首次观察到 12C14N+ 和 12C15N+ 阳离子基本振动模式的旋转振动跃迁。已经测量了 12C14N+ 的 P(3) 到 R(3) 和 12C15N+ 的 R(1) 到 R(3) 的线，这些线受到大约 4 K 的陷阱温度和红外激光器的受限调谐范围的限制。提供了两种同位素的光谱参数，谱带起点分别位于 2000.7587(1) 和 1970.321(1) cm-1，以及结合新数据和文献数据的同位素独立拟合。