Excimer emission band at 235.5 nm in the XeCl molecule
- 15 December 1976
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 29 (12) , 785-787
- https://doi.org/10.1063/1.88948
Abstract
Band emission at 235.5 nm is observed in fast discharge in a Xe/Cl2 mixture at low pressure. This emission has the same spectral width as that of the excimer 2Σ+1/2→ 2Σ+1/2 transition at 307 nm. It is suggested that this band is also due to bound‐free transitions, but belongs to the spin‐orbit split level 2Π state of the ionic XeCl molecule that correlates with Xe+(2P1/2) and Cl−(1S). The molecular energy gap between 2Σ+1/2 and 2Π1/2 is almost equal to the atomic spin‐orbit splitting and their potential curves are very similar. This bound‐free 2Π1/2→2Σ+1/2 emission may be an excimer laser candidate.Keywords
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