https://doi.org/10.1140/epjs/s11734-023-00922-5
Regular Article
Dissociative recombination of N
: a revisited study
1
Institute for Nuclear Research (ATOMKI), Bem tér 18/c, 4001, Debrecen, Hungary
2
Laboratoire Ondes et Milieux Complexes, CNRS, Université le Havre Normandie, 53 rue Prony, 76058, Le Havre, France
3
Laboratoire de Génie des Procédés et Matériaux, CNRS, Université Paris Saclay, CentraleSupelec, 3 rue Joliot-Curie, 91190, Gif-sur-Yvette, France
4
Laboratoire Univers et Particules de Montpellier, CNRS, Université de Montpellier, Place Eugène Bataillon-CC 72, 34095, Montpellier, France
5
Photonics Research Center, Bartlett Hall Science Center, Building 753, United States Military Academy, 10996-1790, West Point, NY, USA
6
Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères, Observatoire de Paris, Université PSL, 5, place Jules Janssen, 92195, Meudon, France
7
Department of Physics, University of Central Florida, 4111 Libra Drive, 32816, Orlando, FL, USA
8
Laboratoire Aimé-Cotton, CNRS, Université Paris-Saclay, Bât. 505, Rue du Belvédère, 91400, Orsay, France
Received:
15
January
2023
Accepted:
2
July
2023
Published online:
31
July
2023
Dissociative recombination of NH
is explored in a two-step theoretical study. In a first step, a diatomic (1D) rough model with a frozen NN bond and frozen angles is adopted, in the framework of the multichannel quantum defect theory (MQDT). The importance of the indirect mechanism and of the bending mode is revealed, in spite of the disagreement between our cross section and the experimental one. In the second step, we use our recently elaborated 3D approach based on the normal mode approximation combined with R-matrix theory and MQDT. This approach results in satisfactory agreement with storage-ring measurements, significantly better at very low energy than the former calculations.
© The Author(s) 2023
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