Absolute measurements of state-to-state rotational energy transfer between CO and H-2 at interstellar temperatures - Archive ouverte HAL Access content directly
Journal Articles Physical Review A Year : 2022

Absolute measurements of state-to-state rotational energy transfer between CO and H-2 at interstellar temperatures

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Abstract

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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Dates and versions

hal-03629790 , version 1 (06-05-2022)

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Attribution - NonCommercial - NoDerivatives - CC BY 4.0

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Hamza Labiad, Martin Fournier, Laura A. Mertens, A Faure, David Carty, et al.. Absolute measurements of state-to-state rotational energy transfer between CO and H-2 at interstellar temperatures. Physical Review A, 2022, 105 (2), pp.L020802. ⟨10.1103/PhysRevA.105.L020802⟩. ⟨hal-03629790⟩
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