Final-state-resolved mutual neutralization in I<sup>+</sup> - I<sup>−</sup> collisions - Archive ouverte HAL
Article Dans Une Revue Physical Review A Année : 2022

Final-state-resolved mutual neutralization in I+ - I collisions

Mingchao Ji
Suvasthika Indrajith
Richard Thomas
Henning Schmidt
Henning Zettergren

Résumé

We have studied the mutual neutralization reaction of atomic iodine ions (i.e., I++I→I+I) in a cryogenic double electrostatic ion-beam storage-ring apparatus. Our results show that the reaction forms iodine atoms either in the ground-state configuration (I(5p5 2P0), ∼40%) or with one atom in an electronically excited state (I(6s2 [2]), ∼60%), with no significant variation over the branching ratios in the studied collision-energy range (0.1–0.8 eV). We estimate the total charge-transfer cross section to be of the order of 10-13cm2 at 0.1 eV collision energy. Ab initio relativistic electronic structure calculations of the potential-energy curves of I2 suggest that the reaction takes place at short internuclear distances. The results are discussed in view of their importance for applications in electric thrusters.

Dates et versions

hal-03768879 , version 1 (18-07-2022)
hal-03768879 , version 2 (05-09-2022)
hal-03768879 , version 3 (16-11-2022)

Identifiants

Citer

Mathias Poline, Xiang Yuan, Sylvain Badin, Mingchao Ji, Stefan Rosén, et al.. Final-state-resolved mutual neutralization in I+ - I collisions. Physical Review A, 2022, 106 (1), pp.012812. ⟨10.1103/PhysRevA.106.012812⟩. ⟨hal-03768879v1⟩
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