(1998) “The U-Zr (Uranium-Zirconium) System”. Bull. Alloy Phase Diagrams 10: pp. 165-171R. Sheldon and D. Peterson, "The U-Zr (Uranium-Zirconium) system," Journal of Phase Equilibria: 1989, vol 10, pp. 165-171.R.I. Sheldon and D.E. Peterson: “The U-Zr (Uranium-Zirconium...
U☢ 238.03 Uranium 93 Np☢ 237.05 Neptunium 94 Pu☢ 244.06 Plutonium 95 Am☢ 243.06 Americium 96 Cm☢ 247.07 Curium 97 Bk☢ 247.07 Berkelium 98 Cf☢ 251.08 Californium 99 Es☢ 252.08 Einsteinium 100 Fm☢ 257.10 Fermium
Carbon isotopes represent an important tool for correlating the Ordovician system, both at global27,28and regional scales29,30. Previous studies have revealed the Hirnantian isotope carbon excursion (HICE), which is characterized by significant δ13C-enrichments of both sedimentary carbonates (δ13Cc...
If the fissionable fuel elements are intimately mixed with a moderator, the system is called a homogeneous reactor (e.g., a reactor having a core of a liquid uranium compound dissolved in heavy water). The breeder reactor is a special type used to produce more fissionable atoms than it ...
Compared with the standard UO2 fuel system, the increased uranium density can significantly reduce the operating temperature of the fuel pellet, which is beneficial to the energy containment and release under LOCA. However for U3Si2, it should be noted that the margin to fuel melting can be ...
The reference VTR design in Heidet and Roglans-Ribas (2021) is a 300 MW thermal sodium-cooled fast reactor (SFR) with a ternary metal alloy fuel of uranium, plutonium, and zirconium capable of producing fast neutron fluxes above 1015 n/cm2-s to support advanced reactor material testing (...
The uranium (U)–lead (Pb) isotopic compositions of various mineral phases in Chang’e-5 basalt clasts were determined using a CAMECA IMS 1280HR secondary ion mass spectrometer (SIMS) (complete dataset presented in Supplementary Table3). Zr-bearing minerals, phosphates and others (that is, plag...
It is determined that the temperature range 2500–2600°C oxide and metallic phases which are immiscible in the fused state form as a result of the interaction of underoxidized melts C-32–C-70 (U/Zr = 1.2). Fused iron is saturated with uranium, zirconium, and oxygen. The density of ...
The distribution ratios for the tri-valent f-block elements Am, Ce, Nd, and Eu during the extraction steps were all consistent with previous extraction studies of these elements in the ALSEP system. The distribution ratios for these lanthanide and actinide elements were greater than 1, resulting...
U--uranium vol %--volume percent W--tungsten wt %--weight percent ZPPR--Zero Power Physics Reactor Zn--zinc Zr--zirconium Definitions actinide oxide--a mineral phase of the form AnO2, where An is generally U, but can include Th, Np, Pu and Am brannerite--a mineral phas...