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Dissociative recombination of N$_2$H$^+$: A revisited study
Instrumentation and Methods for Astrophysics · Submitted 29 May 2023
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim This approach results in satisfactory agreement with storage-ring measurements, significantly better at very low energy than the former calculations.
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The abstract, sentence by sentence
Dissociative recombination of N$_2$H$^+$ is explored in a two-step theoretical study. In a first step, a diatomic (1D) rough model with 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 a 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.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Dissociative recombination of N$_2$H$^+$ is explored in a two-step theoretical study. | contribution 0.96 | 0.87 | 0.04 | asserted 0.96 |
| s1 | In a first step, a diatomic (1D) rough model with frozen NN bond and frozen angles is adopted, in the framework of the multichannel quantum defect theory (MQDT). | method 1.00 | 0.82 | 0.03 | asserted 0.97 |
| s2 | 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. | result 0.68 | 0.89 | 0.20 | asserted 1.00 |
| s3 | In a second step, we use our recently elaborated 3D approach based on the normal mode approximation combined with R-matrix theory and MQDT. | method 0.95 | 0.85 | 0.05 | asserted 0.98 |
| s4 | This approach results in satisfactory agreement with storage-ring measurements, significantly better at very low energy than the former calculations. | result 0.99 | 0.92 | 0.68 | asserted 1.00 |
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Original abstract
Dissociative recombination of N$_2$H$^+$ is explored in a two-step theoretical study. In a first step, a diatomic (1D) rough model with 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 a 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.
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