Absolute measurements of state-to-state rotational energy transfer between CO and H2 at interstellar temperatures
Absolute measurements of state-to-state rotational energy transfer between CO and H2 at interstellar temperatures
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星际温度下 CO 和 H2 之间的状态间旋转能量转移的绝对测量
DOI：
10.1103/physreva.105.l020802
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发表时间：
2022
影响因子：
2.9
通讯作者：
Sims, Ian R.
中科院分区：
文献类型：
--
作者：
Labiad, Hamza;Fournier, Martin;Mertens, Laura A.;Faure, Alexandre;Carty, David;Stoecklin, Thierry;Jankowski, Piotr;Szalewicz, Krzysztof;Le Picard, Sébastien D.;Sims, Ian R.
本文报道了在稠密星际云中普遍存在的极低温度（K）下，CO与H2O碰撞的转动能量转移的态-态速率系数的实验测量和理论计算。在冷超音速流中使用时间分辨红外-真空-紫外双共振光谱和紧密耦合量子散射计算进行的量子态选择实验之间的详细协议证实了星际介质中两个最丰富的分子之间碰撞计算的有效性。
Experimental measurements and theoretical calculations of state-to-state rate coefficients for rotational energy transfer of CO in collision withare reported at the very low temperatures prevailing in dense interstellar clouds (K). Detailed agreement between quantum state-selected experiments performed in cold supersonic flows using time-resolved infrared–vacuum-ultraviolet double-resonance spectroscopy and close-coupling quantum scattering calculations confirms the validity of the calculations for collisions between the two most abundant molecules in the interstellar medium.