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Dissociative electron attachment to MgCN

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Abstract

Dissociative electron attachment (DEA) to the molecule MgCN and its isomer MgNC has been proposed as a possible source of CN− in the interstellar media. We have carried out electron scattering calculations using the complex Kohn Variational Method as a function of the internal degrees of freedom of the molecule to obtain the resonance energy surfaces and autoionization widths. We use these data as input to form the Hamiltonian relevant to the nuclear dynamics. The multidimensional time-dependent Schrödinger equation is solved using the MultiConfiguration Time-Dependent Hartree (MCTDH) approach. We compute the DEA cross sections and discuss the implications for CN− formation in circumstellar envelopes.

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Author information

Authors and Affiliations

  1. Department of Chemical Engineering, University of California, Davis, CA, 95616, USA

    Ann Orel

  2. Department of Physics, Stockholm University, AlbaNova University Center, SE-106 91, Stockholm, Sweden

    Åsa Larson

Authors
  1. Ann Orel
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  2. Åsa Larson
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Correspondence to Ann Orel.

Additional information

Contribution to the Topical Issue “Low-Energy Positron and Positronium Physics and Electron-Molecule Collisions and Swarms (POSMOL 2019)”, edited by Michael Brunger, David Cassidy, Saša Dujko, Dragana Marić, Joan Marler, James Sullivan, Juraj Fedor.

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Orel, A., Larson, Å. Dissociative electron attachment to MgCN. Eur. Phys. J. D 74, 15 (2020). https://doi.org/10.1140/epjd/e2019-100542-x

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  • DOI: https://doi.org/10.1140/epjd/e2019-100542-x

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