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Assessment of transitions in I2 induced by an orange and a yellow fix-frequency HeNe laser
Umeå University, Faculty of Science and Technology, Department of Physics.
2016 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The aim of this thesis is to study the energy structure of the molecular Iodine and to assess the exact rovibronic transitions induced by two fix-frequency Helium-Neon (He-Ne) lasers (an ''orange" and a ''yellow"). We construct a laser-induced fluorescence (LIF) spectroscopy system detecting the fluorescence spectra produced by excitation of the molecular Iodine vapor with He-Ne lasers. By stimulating all possible excitation routes and corresponding fluorescence spectrum, we compare the experimental spectrum to the calculated spectrum, and determine the exact rovibronic transitions each laser induces. We find that He-Ne lasers induce rovibronic transitions between the ground state X 1Σ+g and the excited state B 3Π+0u of the molecular Iodine: the orange He-Ne laser from v''=2, J''=49 to v'=9, J'=50; and the yellow He-Ne laser includes emission both from v''=3, J''=182 to v'=19, J'=183, and from v''=2, J''=188 to v'=17, J'=189.

Place, publisher, year, edition, pages
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:umu:diva-122056OAI: diva2:936888
Subject / course
Fysik C - Examensarbete
Available from: 2016-06-14 Created: 2016-06-14 Last updated: 2016-06-14Bibliographically approved

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