| Autor: |
Poline, Mathias, Rosen, Stefan, Ji, MingChao, Simonsson, Ansgar, Reinhed, Peter, Larsson, Mats, Schmidt, Henning T., Thomas, Richard D., Dochain, Arnaud, Urbain, Xavier, Grumer, Jon, Barklem, Paul, Ard, Shaun G., Shuman, Nicholas S., Viggiano, Albert A. |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Popis: |
The double ion storage ring DESIREE has been used in combination with position- and time-sensitive detectors to study the mutual neutralization of N+ with O- at 40 meV collision energy. Several previously unassigned spectral features observed in a recent single-pass merged-beams experiment at 7 meV collision energy [Phys. Rev. Lett. 121, 083401 (2018)], were also observed in the present experiment. It was found that neutralization channels of the first metastable state of the cation [N+(1D), τ≈ 256 s] could explain the majority of these features, while the second metastable state [N+(1S), τ≈ 0.9 s] was not found to contribute significantly. The branching ratios into the different electronically excited states of N were determined and found to be in good agreement between the two experiments. Theoretical calculations using the multichannel Landau-Zener model were found to yield good results for a number of channels, but could not describe some observed contributions, possibly due to the presence of other processes not accounted for in the model. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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