Actinide elements

AccessScience ◽  
2015 ◽  
Keyword(s):  
Actinide Elements

Ion exchange studies of the actinide elements

1959 ◽  
Vol 36 (9) ◽  
pp. 462 ◽  
Author(s):  
Gregory R. Choppin
Keyword(s):  
Ion Exchange ◽  
Actinide Elements

Experimental and theoretical studies on extraction of actinides and lanthanides by alicyclic H-phosphonates

2017 ◽  
Vol 105 (4) ◽  
Author(s):  
Suresh Annam ◽  
Gopinadhanpillai Gopakumar ◽  
C.V.S. Brahmmananda Rao ◽  
N. Sivaraman ◽  
Akella Sivaramakrishna ◽  
...  
Keyword(s):  
Liquid Extraction ◽  
Theoretical Studies ◽  
Liquid Liquid Extraction ◽  
Experimental And Theoretical Studies ◽  
Actinide Elements

AbstractThree different alicyclic substituents H-phosphonates, namely, dicyclopentyl H-phosphonate, dicyclohexyl H-phosphonate and dimenthyl H-phosphonate were synthesized and used for liquid–liquid extraction of actinide elements (U, Am and Th) and lanthanide (Gd) in

Preparation of thin uniform targets of actinide elements: Uranium and americium

1966 ◽  
Vol 17 (5) ◽  
pp. 306-308 ◽  
Author(s):  
J.C. Laul ◽  
M.V. Ramaniah ◽  
C.L. Rao
Keyword(s):  
Actinide Elements

Separation Processes for Actinide Elements

1984 ◽  
Vol 19 (11-12) ◽  
pp. 911-925 ◽  
Author(s):  
Gregory R. Choppin
Keyword(s):  
Separation Processes ◽  
Actinide Elements

UNIVERSAL SOLVENT EXTRACTION (UNEX) FLOWSHEET TESTING FOR THE REMOVAL OF CESIUM, STRONTIUM, AND ACTINIDE ELEMENTS FROM RADIOACTIVE, ACIDIC DISSOLVED CALCINE WASTE

2002 ◽  
Vol 20 (4-5) ◽  
pp. 429-445 ◽  
Author(s):  
R. Scott Herbst ◽  
Jack D. Law ◽  
Terry A. Todd ◽  
Valeriy N. Romanovskiy ◽  
Vasily A. Babain ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Actinide Elements

New reference materials for trace-levels of actinide elements in plutonium

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Richard M. Essex ◽  
Lav Tandon ◽  
Amy Gaffney ◽  
Cole R. Hexel ◽  
Debbie A. Bostick ◽  
...  
Keyword(s):  
Reference Material ◽  
Reference Materials ◽  
Quartz Glass ◽  
Uranium Isotope ◽  
Glass Bottle ◽  
Plutonium Isotopes ◽  
Mass Fractions ◽  
Trace Constituents ◽  
Actinide Elements

Abstract Two plutonium oxides were prepared as unique reference materials for measurement of actinide elements present as trace constituents. Each reference material unit is approximately 200 mg of PuO2 powder in a quartz glass bottle. Characterized attributes of the oxides included mass fractions of plutonium, americium, neptunium, and uranium. Isotope-amount ratios were also determined for plutonium and uranium, but neptunium and americium were observed to be monoisotopic 237Np and 241Am. Measurements for characterization and verification of the attributes show that plutonium and trace actinides are homogeneous with the exception of limited heterogeneity for uranium, primarily observed for the 238U isotope. Model purification ages calculated from measured americium and uranium attribute values are consistent with material histories and indicate that these impurities are predominantly due to the decay of plutonium isotopes.

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