The Debye Temperature of a Single Crystal Thorium–Uranium Dioxide Alloy
Abstract
The effective Debye temperature () of the surface of a single crystal of U0.71Th0.79O2 alloy prepared by hydrothermal synthesis is obtained from temperature‐dependent X‐ray photoemission in the temperature range of 300–623 K. The effective average Debye temperature is determined to be 217 ± 24 K. X‐ray fluorescence (XRF) spectroscopy confirms the crystal's composition as U0.71Th0.79O2. Photoemission spectroscopy reveals both thorium and uranium 4f states, which includes uranium and thorium in 4+ oxidation states. The Debye temperature of the single crystal U0.71Th0.79O2 alloy, as measured via photoemission, is lower than urania or thoria literature values, indicating either higher defect scattering or the presence of added vibrational modes within the alloyed sample.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 13, 2018
- Source ID
- 10.1002/pssr.201800436
Entities
People
- Christina Dugan
- Christopher V. Young
- Eric Hunt
- James C. Petrosky
- James Mann&
- John W. Mcclory
- Mitchell Schneider
- Rodney Carmona
Organizations
- Air Force Institute of Technology
- Air Force Research Laboratory
- Defense Threat Reduction Agency
- National Air and Space Intelligence Center
- Wright State University