(1993) Laser spectroscopy of 3A2 -> 1A1 phosphorescence of sulphur dioxide. Masters thesis, King Fahd University of Petroleum and Minerals.
|
PDF
9839.pdf Download (3MB) | Preview |
Arabic Abstract
-
English 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.
| Item Type: | Thesis (Masters) |
|---|---|
| Subjects: | Physics |
| Department: | College of Engineering and Physics > Physics |
| Committee Advisor: | Al-Adel, Fida |
| Committee Members: | Al-Suwaiyan, Abdulaziz A. and Higazi, Ezzat and Riazuddin, - |
| Depositing User: | Mr. Admin Admin |
| Date Deposited: | 22 Jun 2008 13:50 |
| Last Modified: | 01 Nov 2019 13:51 |
| URI: | http://eprints.kfupm.edu.sa/id/eprint/9839 |