Open AccessDissociative electron attachment to SO2 near 7.5 eV resonance and axial-recoil approximation
Author(s) -
Irina Jana,
Sumit Naskar,
Dhananjay Nandi
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1412/5/052005
Subject(s) - ion , atomic physics , dissociation (chemistry) , recoil , electron , shape resonance , resonance (particle physics) , chemistry , dissociative , electron capture , dissociative recombination , molecular physics , physics , nuclear physics , biochemistry , organic chemistry , recombination , gene , medicine , pharmacology
We present experimental results for dissociative electron attachment to sulfur dioxide near the 7.5 eV resonance. The dissociation channels leading to O − , S − and SO − ions formation have been investigated with a velocity map imaging technique. While the O − and SO − ions formed by dissociative electron attachment show angular distributions characteristic to a combination of A 1 +B 2 symmetry, the S − ions show angular distributions resulting from changes in the orientation of the dissociating bond due to bending mode vibrations implying the failure of axial-recoil approximation.