A data set of 7,381 molecular iodine vapor rovibronic transitions between the X and B electronic states has been prepared for an advanced undergraduate spectroscopic analysis project. Students apply standard theoretical techniques to these data and determine the values of three X-state constants ( B̃ e ″, ν̃ e ″, D̃ e ″ ) and four B-state constants ( B̃ e ′, ν̃ e ′, D̃ e ′, T̃ e ′ ). Morse potentials for the two states may be calculated from these seven constants.
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Williamson et al. (2013) studied this question.
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