University of Groningen
Line shape analysis for precision spectroscopy in Ba+ ions
Valappol, Nivedya
DOI:
10.33612/diss.100383960
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Publication date: 2019
Link to publication in University of Groningen/UMCG research database
Citation for published version (APA):
Valappol, N. (2019). Line shape analysis for precision spectroscopy in Ba+ ions. University of Groningen. https://doi.org/10.33612/diss.100383960
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Propositions
accompanying the dissertation
Line shape analysis for precision spectroscopy in Ba
+ions
by
Nivedya Valappol
1. Practical precision measurement experiments become possible with inher-ently small amounts of radioactive isotopes where parity violating effects are enhanced using laser cooling and trapping techniques.
2. It is difficult to anticipate potential systematic effects. The main issues are the light shifts induced by the optical fields, and the extent to which imperfections in the apparatus can cause these shifts to look like parity violating shifts.
3. ”We have a conventional theory of weak interactions invented by Marshak and Sudarshan, published by Feynman and Gell-Mann, and completed by Cabibbo - the one which is described as the V - A theory.” - R. P. Feynman. The V - A theory went on to become the basic first step, the crucial ingredient, for the unification of electromagnetism and weak interactions, achieved by Sheldon Lee Glashow, Abdus Salam and Steven Weinberg by 1967-68.
4. Short term solutions like operating a photoionization laser beyond the manufacturer specifications, however within the safety limits could save a lot of time spent on otherwise searching for a commercially not easily available laser.
5. The wavelength meter uses multi-mode fiber to couple in the various laser lights used for the experiment. Interference between the many spatial modes guided in this multi-mode fiber produces the wavelength-dependent speckle pattern. Changing the speckle pattern when accidentally touching the optical fiber causes a change in the wavelength meter reading and one should be careful not to misunderstand this as a wrong wavelength while trying to lock the laser light to a particular frequency.
6. In a multi-cultural, multi-lingual work space good communication is es-sential to share ideas and make decisions as a team.
These propositions are regarded as opposable and defendable, and have been approved as such by the promotor prof. dr. K. H. K. J. Jungmann.
