Bond dissociation energy of O2 measured by fully state-to-state resolved threshold fragment yield spectra.
J Chem Phys
; 160(16)2024 Apr 28.
Article
em En
| MEDLINE
| ID: mdl-38647301
ABSTRACT
We have determined the bond dissociation energy of O2 by measuring fully state-to-state resolved threshold fragment yield spectra in the XUV energy region, O2X3Σg-,Nâ³,Jâ³âO(PJ3)+O(S1o3)/O(S2o5). Our results have yielded a bond dissociation energy value of 41 269.19 ± 0.10 cm-1, which is consistent with previous measurements but exhibits a significantly lower uncertainty, approximately five times smaller. It is noteworthy that this study is the first to simultaneously achieve fine structure state resolution for the parent O2 molecule and spin-orbit state resolution for the O(3PJ) fragments in the measurement of O2 bond dissociation energy. As a result, our findings have established a solid foundation for the obtained data.
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MEDLINE
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Ano de publicação:
2024
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Article