Storage-ring study of the mutual neutralization of N+ with O−

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≈256s] could explain the majority of these features, while the second metastable state [N+(1S),τ≈0.9s] 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.

Rosén, StefanStockholms universitet,Fysikum(Swepub:su)sros (författare)
Ji, MingChaoStockholms universitet,Fysikum(Swepub:su)miji4877 (författare)
Simonsson, AnsgarStockholms universitet,Fysikum(Swepub:su)simonsson (författare)
Reinhed, Peter,1964-Stockholms universitet,Fysikum(Swepub:su)reinhed (författare)
Larsson, Mats,1957-Stockholms universitet,Fysikum(Swepub:su)ml (författare)
Schmidt, Henning T.Stockholms universitet,Fysikum(Swepub:su)schmidt (författare)
Thomas, Richard D.Stockholms universitet,Fysikum(Swepub:su)rdt (författare)
Dochain, Arnaud (författare)
Urbain, Xavier (författare)
Grumer, Jon (författare)
Barklem, Paul S. (författare)
Ard, Shaun G. (författare)
Shuman, Nicholas S. (författare)
Viggiano, Albert A. (författare)
Stockholms universitetFysikum (creator_code:org_t)

Ingår i:Physical Review A: covering atomic, molecular, and optical physics and quantum information: American Physical Society (APS)105:62469-99262469-9934

Av författaren/redakt...: Poline, Mathias; Rosén, Stefan; Ji, MingChao; Simonsson, Ansga ...; Reinhed, Peter, ...; Larsson, Mats, 1 ...; visa fler...; Schmidt, Henning ...; Thomas, Richard ...; Dochain, Arnaud; Urbain, Xavier; Grumer, Jon; Barklem, Paul S.; Ard, Shaun G.; Shuman, Nicholas ...; Viggiano, Albert ...; visa färre...

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