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Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
Published on: February 14, 2014
Electronic spectrum of TaO and its hyperfine structure
Kara J Manke1, Tyson R Vervoort, Keith T Kuwata
1Department of Chemistry, Macalester College, St Paul, MN 55105, USA.
The Journal of Chemical Physics
|March 19, 2008
Summary
Researchers studied tantalum oxide (TaO) molecules using laser spectroscopy. They precisely measured hyperfine structure, confirming a pure delta electronic configuration for the TaO ground state.
Area of Science:
- Molecular Spectroscopy
- Quantum Chemistry
- Atomic Physics
Background:
- Tantalum oxide (TaO) is a molecule with complex electronic and hyperfine structures.
- Understanding these structures is crucial for various applications in materials science and chemistry.
Purpose of the Study:
- To investigate the electronic and hyperfine structure of the tantalum oxide (TaO) molecule.
- To accurately determine the magnetic dipole and electric quadrupole interactions in TaO.
- To validate theoretical calculations of the TaO ground state electronic configuration.
Main Methods:
- Laser excitation spectroscopy was employed to record specific bands of TaO.
- Intermodulated fluorescence spectroscopy was used for sub-Doppler resolution measurements.
- Density functional theory (DFT) was utilized for theoretical calculations.
Main Results:
- The B (2)Phi(5/2)-X(1) (2)Delta(3/2)(0,0) and C (2)Delta(3/2)-X(1) (2)Delta(3/2)(0,0) bands of TaO were successfully recorded.
- Hyperfine structure was resolved and assigned, yielding accurate magnetic dipole and electric quadrupole interaction values.
- The calculated magnetic hyperfine constant (625 MHz) closely matched the experimental value (647±10 MHz).
Conclusions:
- The experimental and theoretical results strongly support a pure deltasigma(2) electronic configuration for the X (2)Delta ground state of TaO.
- The unpaired electron in the ground state is localized in a tantalum 5d delta orbital.
- This study provides a detailed understanding of the electronic structure of TaO.
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