Spectroscopic Studies of two f-Block Metal Compound Público
Yan, Jiarui (Spring 2023)
Abstract
Signal transmitted through the high-altitude atmosphere is fluctuated and scintillated because of the natural variation of electron density in the ionosphere. In trying to achieve temporary stabilization of signal transmission, previous field studies conducted high-altitude release of vaporized f-block metal samarium to undergo spontaneous associative ionization with ambient oxygen. In the process of examining electronic transitions of SmO in the 645 – 670 nm range, an overlap of two rotational structures were found near 665 nm. The present work focuses on spectroscopic studies of separating the overlapping structures and taking rotationally resolved spectra. Rotational constants were derived by spectrum fitting to assist modeling the molecule’s spectrum, which could be used to compared with that of the field experiment.
To study the behavior of f electrons in f-block metals, previous studies on actinide metal compound thorium oxyfluoride were conducted. Spectra were found to be not resolvable at high resolution, which was speculated to be due to high density of electronic states. To obtain rotationally resolvable spectra, spectroscopic studies on thorium oxyfluoride were conducted. Resulting spectra were simulated by contoured fit, and rotational constants were estimated.
Table of Contents
Chapter 1: Spectroscopic Study on Lanthanide Compound SmO
Chapter 1.1: Introduction.................................................................................1
Chapter 1.2: Experimental...............................................................................3
Chapter 1.3: Results and Analysis......................................................................5
Chapter 1.4: Discussion...................................................................................7
Chapter 1.5: Summary....................................................................................9
Chapter 2: Spectroscopic Study on Actinide Compound OThF
Chapter 2.1: Introduction................................................................................10
Chapter 2.2: Experimental..............................................................................12
Chapter 2.3: Results and Analysis.....................................................................14
Chapter 2.4: Discussion.................................................................................17
Chapter 2.5: Summary...................................................................................19
Reference...................................................................................................20
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