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首页> 外文期刊>The Astrophysical journal >THE MILLIMETER AND SUBMILLIMETER SPECTRUM OF AlCH_3 (X~1A_1)
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THE MILLIMETER AND SUBMILLIMETER SPECTRUM OF AlCH_3 (X~1A_1)

机译：AlCH_3（X〜1A_1）的毫米波和亚毫米波谱

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摘要

The pure rotational spectrum of AlCH_3 has been recorded using millimeter/submillimeter direct absorption techniques. This is the first time this species has been observed in the laboratory by any spectroscopic method. AlCH_3 was created in a d.c. discharge by the reaction of aluminum vapor and dimethyl mercury. The K = 0,1, 2, and 3 components in fourteen rotational transitions of this symmetric top molecule were measured in the frequency range 188-517 GHz and several lines recorded for K = 4, 5 and 6 ladders as well. From these data, rotational parameters have been accurately determined. This study confirms the structure predicted for AlCH_3 from theoretical calculations, as well as provides precise rest frequencies. Aluminum-bearing molecules have been observed in the late-type carbon star IRC +10216, which also has a large abundance of CH_4. Hence, AlCH_3 may be detectable in this object and perhaps in other sources.
机译：已经使用毫米/亚毫米直接吸收技术记录了AlCH_3的纯旋转光谱。这是首次通过任何分光镜方法在实验室中观察到该物种。 AlCH_3是在直流中创建的。通过铝蒸气和二甲基汞的反应放电。在188-517 GHz频率范围内测量了该对称顶部分子在14个旋转跃迁中的K = 0、1、2和3分量，并记录了K = 4、5和6阶梯的几条线。根据这些数据，可以准确确定旋转参数。这项研究证实了理论计算为AlCH_3预测的结构，并提供了精确的静止频率。在后期型碳星IRC +10216中观察到了含铝分子，后者也具有大量的CH_4。因此，AlCH_3可能在此对象中，也可能在其他来源中被检测到。

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