BAND-TO-BAND TRANSITIONS AND CRITICAL POINTS IN THE NEAR-INFRARED TO VACUUM ULTRAVIOLET DIELECTRIC FUNCTIONS OF SINGLE CRYSTAL URANIA AND THORIA
Keywords:
Band, Vacuum, Ultraviolet, Dielectric, Urania, ThoriaAbstract
Critical-point dielectric function investigations and spectral ellipsometry were utilized to compare and find the band-to-band transition energy values for single-crystal actinide samples of thorium oxide and uranium oxide. We used spectroscopic ellipsometry to investigate the dielectric characteristics of thorium oxide and uranium oxide over a wide range of wavelengths, from deep ultraviolet to near-infrared. UO2 has a critical point structure comparable to ThO2, however ThO2's is much more blue-shifted. ThO2 has a bandgap energy of 5.4 eV, while UO2 has a bandgap energy of 2.1 eV.
Downloads
Downloads
Published
Issue
Section
License
Copyright (c) 2026 Advanced Research & Development Journal
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
All articles published in the Journal of Engineering Excellence (JEE) are licensed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0).
Under this license, authors retain full copyright of their work while granting permission for anyone to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, without asking prior permission from the publisher or author — provided that the original work is properly cited.
This open-access license ensures maximum dissemination and impact of the published research by allowing free and immediate access to scholarly work.
For more details, please refer to the official license page:
???? https://creativecommons.org/licenses/by/4.0/
