Laser spectroscopy of 3A2 -> 1A1 phosphorescence of sulphur dioxide
| dc.contributor.author | H. M. Abdulkader Dastageer | |
| dc.date | 1993 | |
| dc.date.accessioned | 2022-05-18T07:53:44Z | |
| dc.date.available | 2022-05-18T07:53:44Z | |
| dc.degree.department | College of Sciences | |
| dc.degree.grantor | King Fahad for Petrolem University | |
| dc.description.abstract | Supersonic jet beam of SO₂ seeded in Ar was excited by 3021A laser radiation and the resulting luminescence spectrum was recorded in the 3060-5000A range. At very low SO₂ concentration two different phosphorescence spectra were distinguished from the F-band resonance fluorescence spectrum when proper optical alignment was used. One phosphorescence spectrum was recognized as the ³B₁-->¹A₁ band system while the second was assigned as the previously undetected ³A₂-->¹A₁ band system. The distinction between the two band systems was based mainly on the observation that each system reached vibrational equilibrium at SO₂ pressure different from the other. Five progressions of energy separation 955 cm⁻¹ were identified as V₁ progressions of ³A₂ state. The zero order values for V₂ is around 417cm⁻¹ is around 1062 cm-¹, on the other hand, were estimated from a tentative vibrational analysis of the resulting ³A₂-->¹A₁ phosphorescence spectrum. The formation mechanism of the triplet molecules and the possible internal conversion between the ³A₂ and ³B₁ states are also discussed. | |
| dc.identifier.other | 5407 | |
| dc.identifier.uri | https://drepo.sdl.edu.sa/handle/20.500.14154/2813 | |
| dc.language.iso | en | |
| dc.publisher | Saudi Digital Library | |
| dc.thesis.level | Master | |
| dc.thesis.source | King Fahad for Petrolem University | |
| dc.title | Laser spectroscopy of 3A2 -> 1A1 phosphorescence of sulphur dioxide | |
| dc.type | Thesis |