论文标题

星际温度下CO和H2之间的状态旋转能量转移的绝对测量

Absolute measurements of state-to-state rotational energy transfer between CO and H2 at interstellar temperatures

论文作者

Labiad, H., Fournier, M., Mertens, L. A., Faure, A., Carty, D., Stoecklin, T., Jankowski, P., Szalewicz, K., Picard, S. D. Le, Sims, I. R.

论文摘要

在密集的星际云(5-20​​ K)中,在非常低的温度(5-20​​ K)中,报告了CO在与H $ _2 $相撞时的旋转能量转移旋转能量转移的实验测量和理论计算。使用时间分辨的红外线 - 真空 - 欧traviolet双共振光谱和近耦合量子散射计算在冷超音速流中进行的量子状态选择的实验之间的详细一致性证实,在全球媒介中,两种最丰富的分子之间的碰撞计算有效性。

Experimental measurements and theoretical calculations of state-to-state rate coefficients for rotational energy transfer of CO in collision with H$_2$ are reported at the very low temperatures prevailing in dense interstellar clouds (5 - 20 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.

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