Laboratory microwave spectroscopy of the linear C3H and C3D radicals and related astronomical observation
Laboratory microwave spectroscopy of the linear C3H and C3D radicals and related astronomical observation
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DOI：
10.1086/168244
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
S. Yamamoto;S. Saito;H. Suzuki;S. Deguchi;N. Kaifu;S. Ishikawa;M. Ohishi
中科院分区：
文献类型：
--
作者：
S. Yamamoto;S. Saito;H. Suzuki;S. Deguchi;N. Kaifu;S. Ishikawa;M. Ohishi
旋转光谱线的C{sub 3}H和C3 D自由基在其地面和振动激发态的实验室观测进行了比较与天文观测与野边山射电天文台的45米射电望远镜对IRC + 10216在1988年5月。发现C{sub 3}H自由基具有极低的振动激发态nu 4（2 σ μ），这是由nu 4（CCH弯曲）态中的Renner-Teller效应引起的。射电望远镜观测未能探测到在均方根噪声水平为24 mK的振动激发C3 H谱线。nu 4（2 Sigma mu）的柱密度上限估计为3 × 10 - 12次方/cm 2。参考文献27。
Laboratory observations of rotational spectral lines of the C{sub 3}H and C3D radicals in their ground and vibrationally excited states are compared with astronomical observations with the Nobeyama Radio Observatory's 45-m radio telescope carried out toward IRC + 10216 in May 1988. The C{sub 3}H radical is found to have an extremely low vibrationally excited state, nu4(2Sigma mu), caused by the Renner-Teller effect in the nu4 (CCH bending) state. The radio telescope observations failed to detect the lines of the vibrationally excited C3H at the rms noise level of 24 mK. The upper limit to the column density of the nu4(2Sigma mu) is estimated to be 3 x 10 to the 12th/sq cm. 27 refs.