Geronimo Robles

University of Texas at San Antonio | UTSA · Department of Physics and Astronomy

Research and development of high uranium density fuels supports the on-going effort to enhance reactor technology, safety, performance, and economics. Among high uranium density fuels, U3Si2 is a favored fuel candidate due to its higher uranium density and improved thermal conductivity when compared to traditional UO2. While U3Si2 demonstrates an i...

The present study addresses the lack of steam oxidation kinetic data for high purity uranium mononitride (UN), assesses the sensitivity of the dynamic response of UN to the density of the monolithic sample exposed to flowing steam, as well as observes the variation in the oxidation kinetic response of UN to the presence of a common fabrication cont...

Uranium silicides are considered for advanced technology reactor fuels due to their enhanced thermal conductivity and high uranium density (U3Si and U3Si2) compared to traditional UO2. Susceptibility to oxidation and wash out, in the event of a cladding breech, could limit the potential for deployment of silicides as accident tolerant fuels. Mitiga...

A non-aqueous reversed phase liquid chromatography – mass spectrometry (LC/MS) method has been developed for extremely hydrophobic MPCs [or metallic clusters], and has been applied to the efficient separation of gold - dodecanethiolate (ddt) assemblies, leading to the identification of three dodecane thiolate-protected gold clusters – Au130(ddt)50,...

Evidence for the existence of condensed phase isomers of silver-lipoate clusters, Ag29(LA)12, where LA = (R) - α lipoic acid, was obtained by reversed-phase ion-pair liquid chromatography with inline UV-vis and ESI-MS detection. All components of a raw mixture were separated according to surface chemistry and increasing size via reversed-phase grad...