SO (B3σ−,A 3Π—X3σ−) Emission from low temperature rare gas—sulfur dioxide afterglows
| Autor: | Andrew J. Yencha, Harald Morgner, Konrad T. Wu |
|---|---|
| Rok vydání: | 1982 |
| Předmět: |
Rare gas
Helium gas Resolution (electron density) Analytical chemistry General Physics and Astronomy medicine.disease_cause Cathode law.invention chemistry.chemical_compound chemistry law Metastability medicine Emission spectrum Physical and Theoretical Chemistry Atomic physics Sulfur dioxide Ultraviolet |
| Zdroj: | Chemical Physics. 68:285-292 |
| ISSN: | 0301-0104 |
| DOI: | 10.1016/0301-0104(82)87035-3 |
| Popis: | The emission systems produced in He(2 3 S)/SO 2 , Ne( 3 P 0,2 )/SO 2 and Ar( 3 P 0,2 )/SO 2 , afterglows have been investigated in the ultraviolet and visible spectral ranges. In all three afterglows we have identified previously unknown long—wavelenght progressions in the SO(A 3 Π → X 3 σ − ) system and have assigned several new bands in the SO(B 3 σ − → X 3 σ − )system. Reducing the temperature of the helium gas flowing through a hollow cathode discharge source to 118K effectively removes helium ions from the stream, thus facilitating spectral studies in uncontaminated metastable afterglows. A further effect of cooling the rare gases He, Ne, and Ar is an improvement in the resolution of the emission spectra and an enhanced signal-to-noise ratio. bl |
| Databáze: | OpenAIRE |
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