Laboratory observation of the 3P1-3P0 transition of the neutral carbon atom by submillimeter-wave absorption spectroscopy
Laboratory observation of the 3P1-3P0 transition of the neutral carbon atom by submillimeter-wave absorption spectroscopy
复制标题
亚毫米波吸收光谱实验室观察中性碳原子3P1-3P0跃迁
DOI：
10.1086/185987
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
S. Saito
中科院分区：
文献类型：
--
作者：
S. Yamamoto;S. Saito
用实验室微波光谱观测了中性C-12和C-13原子的3 P1 - 3 P0跃迁。碳原子是通过在液氮温度下释放CO和He的气态混合物而产生的。对于（C-12）T精确地确定跃迁频率为492160.651 +或-0.055MHz，其中误差为频率测量的三个标准偏差。在492160.147 ± 0.168 MHz和492164.276 ± 0.072 MHz处分别观测到（C-13）I的两个超精细分量F = 3/2-1/2和F = 1/2-1/2。在天文观测中，建议使用实验室的精确值作为静止频率。参考文献24篇。
The 3P1-3P0 transitions of the neutral C-12 and C-13 atoms are observed by laboratory microwave spectroscopy. The carbon atom is produced by discharging a gaseous mixture of CO and He at the liquid nitrogen temperature. The transition frequency is precisely determined for (C-12)T to be 492160.651 + or - 0.055 MHz, where the error is three standard deviations in the frequency measurements. Two hyperfine components, F = 3/2-1/2 and F = 1/2-1/2, are observed for (C-13)I at 492164.276 + or - 0.072 MHz and 492160.147 + or - 0.168 MHz, respectively. The precise laboratory values are recommended as rest frequencies in astronomical observations. 24 refs.