Journal
PHYSICAL REVIEW A
Volume 105, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.105.L020802
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Funding
- Agence Nationale de la Recherche (ANR-HYDRIDES) [ANR-12-BS05-0011-01]
- Region de Bretagne
- French National Programme Physique et Chimie du Milieu Interstellaire (PCMI) of CNRS/INSU
- CNES
- Universite de Rennes 1
- Rennes Metropole
- Office for Science and Technology of the Embassy of France in the United States
- National Science Foundation [CHE-1900551]
- National Science Centre of Poland [2017/25/B/ST4/01300]
- INC/INP - CEA
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Experimental measurements and theoretical calculations of rotational energy transfer of CO in collision with H-2 in very low temperatures prevailing in dense interstellar clouds (5-20 K) are reported. The 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.
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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