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首页> 外文期刊>The Journal of Chemical Physics >Structural determination and population transfer of 4-nitroanisole by broadband microwave spectroscopy and tailored microwave pulses
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Structural determination and population transfer of 4-nitroanisole by broadband microwave spectroscopy and tailored microwave pulses

机译：宽带微波光谱和定制微波脉冲4-硝基吲哚的结构测定和群体转移

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摘要

The rotational spectrum of 4-nitroanisole was recorded via chirped-pulse Fourier transform microwave spectroscopy in the frequency range of 2-8 GHz. The spectra of the parent molecule and all of its C-13-, N-15-, and O-18-monosubstituted species in their natural abundance were assigned, and the molecular structure was determined using Kraitchman's equations as well as a least-square fitting approach. 4-nitroanisole has a large dipole moment of 6.15 D along the inertial a-axis and a smaller dipole moment of 0.78 D along the b-axis. The large dipole moment component makes this molecule a potential candidate for deceleration experiments using static electric fields or electromagnetic radiation. Using tailored microwave pulses, we investigate the possibility of transferring population between the rotational states of 4-nitroanisole. Such a technique could be applied to selectively increase the population for specific rotational states of interest, which are then accessible for further, more advanced experiments, such as deceleration. Published by AIP Publishing.
机译：通过啁啾脉冲傅里叶变换微波谱记录4-硝基吲哚的旋转光谱，在2-8GHz的频率范围内。分子和其天然丰度的母体分子和其所有C-13-，N-15-和O-18-单取代物物质的光谱分配，并且使用Kraitchman的方程以及最小二乘法测定分子结构配件方法。 4-硝基吲哚沿着惯性A轴具有大的偶极矩，沿惯性A轴和较小的偶极矩阵沿B轴。大偶极矩组分使该分子利用静电场或电磁辐射进行减速实验的潜在候选者。使用量身定制的微波脉冲，我们调查在4-硝基吲哚旋转状态之间转移人口的可能性。可以应用这种技术以选择性地增加感兴趣的特定旋转状态的群体，然后可以进一步访问，例如更高级的实验，例如减速。通过AIP发布发布。

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