Laser-induced Fluorescence (lif) Of Jet-cooled Ndo And Ndo⁺

Schmitz, Joel R.

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https://hdl.handle.net/2142/111157 Copy

Description

Title

Laser-induced Fluorescence (lif) Of Jet-cooled Ndo And Ndo⁺

Author(s)

Schmitz, Joel R.

Contributor(s)

• Heaven, Michael
• Rodriguez, Arianna T.

Issue Date

2021-06-24

Keyword(s)

Electronic structure, potential energy surfaces

Abstract

The chemi-ionization reactions of atomic lanthanides M + O $\rightarrow$ MO$^{+}$ + $\emph{e}$$^{-}$ are currently being investigated as a method to artificially increase the ion density in the ionosphere for uniform radio wave propagation. Recent experiments involving the release of atomic neodymium (Nd) into the upper atmosphere have resulted in the production of a cloud with green emission[1]. Based on the cloud emission, it is believed that NdO was the primary product, but spectroscopic characterization of NdO and NdO$^{+}$ is needed to properly identify the emitting species. While NdO is well characterized above 590 nm, little spectroscopic data exits at emission wavelengths below 590 nm[2,3]. Recently, the ionization energy of NdO was determined by REMPI and PIE methods[4], as well as the ion ground state vibrational separation $\Delta$G$_{1/2}$$^{+}$ but there exists no experimental rotational characterization of the low-lying states of NdO$^{+}$. In this experiment, NdO was supersonically expanded and then ionized at 193 nm. Laser-induced fluorescence (LIF) spectra of both NdO and NdO$^{+}$ was obtained at 16,650-20,000 \wn. Electronic states were vibrationally characterized using dispersed laser induced fluorescence (DLIF) techniques. Data and analysis of the ground and low-lying states of NdO and NdO$^{+}$ will be presented. $\newline$ $\indent$[1] Ard, S.G. et al. J. Chem. Phys.2015, 143, 204303. $\newline$ $\indent$[2] Kaledin, L.A. et al. Acta Physica Hungarica 1983, 54, 189-212. $\newline$ $\indent$[3] Linton, C. et al. J. Mol. Spec. 2004, 225, 132-144. $\newline$ $\indent$[4] VanGundy, R.A. et al. J. Chem. Phys. 2019, 114302

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Permalink

http://hdl.handle.net/2142/111157

DOI

10.15278/isms.2021.RL02

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