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Rate constants for a reactive system of astrophysical interest: a statistical study of CH2

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  • Additional Information
    • Contributors:
      Instituto de Física Fundamental Madrid (IFF); Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC); Catholic University of Leuven = Katholieke Universiteit Leuven (KU Leuven); Institut de Physique de Rennes (IPR); Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS); National Tsing Hua University Hsinchu (NTHU); Institut de Planétologie et d'Astrophysique de Grenoble (IPAG); Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (Fédération OSUG)-Université Grenoble Alpes (UGA); Authors want to thank Alex Zanchet and Octavio Roncero for useful discussions and for providing the TDWP results for Section 3.1 and to Wentao Li for the numerical data for Fig. 4. M. S. acknowledges financial support from the European Research Council (consolidated grant COLLEXISM, grant agreement ID: 811363) T. G. L. acknowledges funding from Grant No. MICIU/AIE/10.13039/501100011033 PID2024-155666NB-I00.; European Project: 811363,ERC-2018-COG,ERC-2018-COG,COLLEXISM(2019)
    • Publication Information:
      CCSD
      Royal Society of Chemistry
    • Publication Date:
      2026
    • Collection:
      Université Grenoble Alpes: HAL
    • Abstract:
      International audience ; A systematic investigation on the different processes involving formation, destruction and (de)excitation of specific rovibrational states of CH+ has been carried out based on statistical approaches. Thus, reactive collisions between C+(2P) and H2(v, j) and between CH+(v, j) and H for a large number of state-to-state transitions have been studied using a statistical quantum method and a statistical adiabatic channel model. The capabilities of such techniques for the study of the title system are discussed with comparisons to previous quantum mechanical results and experimental data. Integral cross sections as a function of the energy and rate constants in terms of the temperature (up to 1500 K) are obtained and numerical data for astrophysical purposes are provided.
    • Relation:
      info:eu-repo/semantics/altIdentifier/pmid/41591265; info:eu-repo/grantAgreement//811363/EU/Collisional excitation of interstellar molecules: towards reactive systems/COLLEXISM; PUBMED: 41591265
    • Accession Number:
      10.1039/d5cp04254b
    • Online Access:
      https://hal.science/hal-05493226
      https://hal.science/hal-05493226v1/document
      https://hal.science/hal-05493226v1/file/d5cp04254b.pdf%3B
      https://doi.org/10.1039/d5cp04254b
    • Rights:
      https://creativecommons.org/licenses/by-nc/4.0/ ; info:eu-repo/semantics/OpenAccess
    • Accession Number:
      edsbas.9E6E8F0B