Laser induced fluorescence (LIF) spectroscopy of jet cooled ThO

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https://hdl.handle.net/2142/100616

Title: Laser induced fluorescence (LIF) spectroscopy of jet cooled ThO
Author(s): Schmitz, Joel R.
Contributor(s): Heaven, Michael
Issue Date: 2018-06-21
Keyword(s): Electronic structure, potential energy surfaces
Abstract: Knowledge of actinide bonding is essential for nuclear energy and reactor applications, including nuclear waste treatment. Due to its relatively simple electronic structure, thorium oxide (ThO) is an ideal molecule to study actinide bonding. Previous studies have reported visible and near UV band systems that were recorded under high temperature conditions. Spectral congestion significantly complicated the analyses of these data. In the present work we have examined ThO bands under conditions where jet cooling was used to reduce the rotational temperature to approximately 90 K. LIF spectra were recorded over the range 18,000-19,800 cm−1 . Several new vibronic bands have been characterized. Some extend the data range for known electronic transitions, while others belong to electronic states that have not been reported previously. Analysis of these data and models for the electronically excited states of ThO will be presented.
Publisher: International Symposium on Molecular Spectroscopy
Type of Resource: text
Language: eng
Permalink: http://hdl.handle.net/2142/100616
DOI: 10.15278/isms.2018.RJ04