BONDING AT THE EXTREME. DETECTION AND CHARACTERIZATION OF THORIUM DIMER, Th2

Steimle, Timothy

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https://hdl.handle.net/2142/79388 Copy

Description

Title

BONDING AT THE EXTREME. DETECTION AND CHARACTERIZATION OF THORIUM DIMER, Th2

Author(s)

Steimle, Timothy

Contributor(s)

• Kokkin, Damian L
• Muscarella, Seth

Issue Date

23-Jun-15

Keyword(s)

Metal containing

Abstract

Due to the difficultly of working with actinides (radioactive, short lifetimes) and the number of electrons in these systems our chemical understanding either experimentally or theoretically on these systems is very limited. The electronic spectrum of thorium dimer, Th$_2$, is expected to be heavily congested due to the predicted twelve electronic states within an energy less then 1,eV of the calculated $^3Delta_g$ ground state. The chemical bond is predicted to be a quadruple bond in both the ground state and low lying $^1Sigma^+_g$ state (T$_e$=400,cm$^{-1}$)footnote{B.J. Roos, P.-{AA}. Malmqvist and L. Gagliardi, J. Am. Chem. Soc. 128, 17000-17006, 2006}. Experimentally Th$_2$ was been detected in the gas phase by mass spectrometryfootnote{M.C. Heaven, B.J. Barker and I.O. Antonov, J. Phys. Chem A. 118, 10867-10881, 2014}. Here we report on the detection of the gas fluorescence spectrum of Th$_2$ in the 495-560,nm range via application of 2D LIF spectroscopy and attempts to record high resolution field free and Zeeman spectra.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

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