A theory of magnetism for semi-metallic uranium compounds

1973 ◽  
Vol 34 (9) ◽  
pp. 1537-1542 ◽  
Author(s):  
H. Adachi ◽  
S. Imoto
Keyword(s):  
Uranium Compounds ◽  
Metallic Uranium

Probing the magnetic5fdensity of states above the Fermi level in metallic uranium compounds by x-ray magnetic circular dichroism

1999 ◽  
Vol 60 (15) ◽  
pp. 10606-10609 ◽  
Author(s):  
P. Dalmas de Réotier ◽  
A. Yaouanc ◽  
G. van der Laan ◽  
N. Kernavanois ◽  
J.-P. Sanchez ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Fermi Level ◽  
Magnetic Circular Dichroism ◽  
X Ray ◽  
Uranium Compounds ◽  
Circular Dichroïsm ◽  
Metallic Uranium

The Ternary Uranium Transition Metal Phosphides UV5P3, UCr5P3, and UMn5P3

1993 ◽  
Vol 48 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Wolfgang Jeitschko ◽  
Reinhold Brink ◽  
Peter G. Pollmeier
Keyword(s):  
Structure Type ◽  
Variable Parameters ◽  
Similar Composition ◽  
X Ray ◽  
Arc Melting ◽  
Uranium Compounds ◽  
Metal Phosphides ◽  
Structure Factors ◽  
Transition Metal Phosphides ◽  
Metallic Uranium

The title compounds were prepared from prereacted samples of the elemental components by arc-melting. UCr5P3 was also obtained from a tin flux. UV5P3 and UCr5P3 crystallize with a new structure type, which was determined from X -ray data of a twinned crystal of UCr5P3 :P21/m, a = 959.1(2), b = 370.95(6), c = 696.7(1) pm , β = 100.05(3)°, Z = 2, R = 0.030 for 827 structure factors and 29 variable parameters. UMn5P3 is isotypic with YCo5P3. The structure was refined to a residual of R = 0.054 for 455 structure factors and 28 variables. UCr5P3 has a relatively high, almost temperature independent paramagnetic susceptibility as is frequently observed for metallic uranium compounds. The crystal structures of these phosphides are discussed together with those of other phosphides and silicides of similar composition.

Fluorescence Spectral Imaging as a Tool for Locating Uranium Deposited on Surfaces

2009 ◽  
Author(s):  
David L. Monts ◽  
Guangjun Wang ◽  
Yi Su ◽  
Ping-Rey Jang ◽  
Charles A. Waggoner
Keyword(s):  
Bandpass Filter ◽  
Uv Light ◽  
Visible Region ◽  
Spectral Imaging ◽  
Spectral Information ◽  
Uranyl Compounds ◽  
Uranium Compounds ◽  
Field Samples ◽  
Quantitative Fluorescence ◽  
Metallic Uranium

In the environment, metallic uranium readily oxidizes to form uranium compounds that contain the uranyl (UO2+2) moiety. For more than a hundred and fifty years, it has been known that when illuminated with ultraviolet (UV) light, uranyl compounds exhibit characteristic fluorescence in the visible region (450–650 nm). We report our efforts to develop a transportable, quantitative Fluorescence Spectral Imaging (FSI) system as a tool for locating and quantifying uranyl compounds dispersed in soils and on other surfaces. A project is underway to develop a set of sensors to locate expended depleted uranium (DU) rounds and to process soil and debris to recover the material from domestic firing ranges. The FSI system can also be utilized to monitor excavation of DU munitions and separation of uranyl compounds from soils. FSI images are acquired by illuminating a surface with a UV light and using a narrow bandpass filter on a camera, recording an image of the resulting fluorescence. The FSI image provides both spatial and spectral information. The FSI system is described and its performance characterized using field samples.

Electronic structure of cubic uranium compounds

1979 ◽  
Vol 40 (C4) ◽  
pp. C4-22-C4-23 ◽  
Author(s):  
J. Keller ◽  
M. Erbudak
Keyword(s):  
Electronic Structure ◽  
Uranium Compounds

Band structures of NaCl structure uranium compounds

1979 ◽  
Vol 40 (C4) ◽  
pp. C4-19-C4-21 ◽  
Author(s):  
R. Allen ◽  
M. S.S. Brooks
Keyword(s):  
Band Structures ◽  
Uranium Compounds

Investigation of UBe13 and other beryllium and uranium compounds in normal and superconducting states

1986 ◽  
Vol 64 (1-2) ◽  
pp. 87-104 ◽  
Author(s):  
N. E. Alekseevskii ◽  
V. I. Nizhankovskii ◽  
V. N. Narozhnyi ◽  
E. P. Khlybov ◽  
A. V. Mitin
Keyword(s):  
Uranium Compounds

A family of uranyl oxide hydrate phases with bivalent cations [MII(H2O)4][(UO2)3O3(OH)2]·H2O (MII – Mn, Co, Ni, Zn): synthesis, characterization and chemical stability in aqueous solutions

2021 ◽  
Author(s):  
Nikolay G. Chernorukov ◽  
Oxana V. Nipruk ◽  
Kseniya A. Klinshova ◽  
Olga N. Tumaeva ◽  
Dmitry V. Sokolov
Keyword(s):  
Aqueous Solutions ◽  
Nuclear Fuel ◽  
Chemical Stability ◽  
Fuel Cycle ◽  
Nuclear Fuel Cycle ◽  
Oxide Hydrate ◽  
Uranium Compounds ◽  
Bivalent Cations

A series of new uranium compounds [MII(H2O)3][(UO2)3O3(OH)2]·2H2O (MII – Mn, Co, Ni, Zn) were synthesized for binding radionuclides in the environment and nuclear fuel cycle.

Sign in / Sign up

Export Citation Format

Share Document