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HIGH RESOLUTION INFRARED - INFRARED DOUBLE RESONANCE SPECTROSCOPY STUDY OF THE TRIPLET GROUND STATE OF THE RUBIDIUM DIMER
Beser, Bediha
Beser, Bediha
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Thesis/Dissertation
Date
2010
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Physics
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http://dx.doi.org/10.34944/dspace/768
Abstract
This thesis consists of two parts. The first part is focused on the high resolution infrared-infrared (IRIR) double resonance spectroscopy study of the Rubidium dimer triplet ground state a3Σu+. We have observed fluorescence to this state for J=30, 50 and 70 rotational quantum numbers. We have used a perturbed pair of rovibrational levels in the A1Σu+ ~ b3Πu electronic states as an intermediate excitation step to the higher lying 23Πg state to get access by fluorescence decay to the a3Σu+ state. This allowed us to calculate the term values and the potential energy curve for the triplet ground state. The second part of the thesis is a computational study of lifetimes and transition dipole moment matrix elements for the sodium dimer ion pair states of 1Σg+ symmetry. These calculated parameters will be helpful for the design of a quadruple resonance based Autler-Townes spectroscopic probe of the transition dipole moments between these states and the A1Σu+ state. The calculated lifetime values compare well with results from literature when available. This work was supported by the National Science Foundation through awards PHY 0245311, PHY 0555608 and PHY 0855502.
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