放射性碳甲烷$^{14}CH_{4}$的${ν_3}$谱带的高分辨分析
High-resolution analysis of the ${ν_3}$ band of radiocarbon methane $^{14}CH_{4}$
摘要：
我们提出了第一个高分辨率的测量和转动分析的基本不对称伸缩振动带${ν_3}(F_2)$的放射性碳甲烷。用中红外连续波光学参量振荡器和双光子增强光声探测器组成的光谱仪测定了43条振转谱线的波数。光谱模型可以在实验的准确度范围内再现所有观测到的跃迁波数。我们的工作有助于基于激光光谱的放射性碳甲烷探测器的发展。
英文摘要：
We present the first high-resolution measurements and rotational analysis of the fundamental asymmetric stretching vibrational band ${ν_3}(F_2)$ of radiocarbon methane. A spectrometer consisting of a mid-infrared continuous-wave optical parametric oscillator and a cantilever-enhanced photoacoustic detector was employed to determine the wavenumbers of 43 rovibrational lines. A spectroscopic model could reproduce all the observed transition wavenumbers within the accuracy of the experiment. Our work contributes to the development of radiocarbon methane detectors based on laser spectroscopy.
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