scholarly journals A simple model for the f–d transition of actinide and heavy lanthanide ions in crystals

2006 ◽  
Vol 6 (3) ◽  
pp. 359-362 ◽  
Author(s):  
Chang-Kui Duan ◽  
Michael F. Reid ◽  
Gang Ruan
Keyword(s):  
Simple Model ◽  
Lanthanide Ions ◽  
Heavy Lanthanide

Study of thef →d transition of heavy lanthanide and actinide ions in crystals using the simple model

2005 ◽  
Vol 242 (12) ◽  
pp. 2503-2508 ◽  
Author(s):  
Chang-Kui Duan ◽  
Shangda Xia ◽  
Michael F. Reid ◽  
Gang Ruan
Keyword(s):  
Simple Model ◽  
Heavy Lanthanide ◽  
Actinide Ions

scholarly journals Finite Ligand Size and Sternheimer Antiscreening in Lanthanide Ions

1978 ◽  
Vol 31 (5) ◽  
pp. 421 ◽  
Author(s):  
S Ahmad ◽  
DJ Newman
Keyword(s):  
Simple Model ◽  
Point Charge ◽  
Significant Contribution ◽  
Lanthanide Ions ◽  
Lanthanide Ion ◽  
Model Based ◽  
Charge Interaction ◽  
Nuclear Quadrupole

A finite ligand affects the quadrupole potential at the nucleus of a lanthanide ion in two ways: it produces a positive exchange charge in the region of overlap and it reduces the antiscreening of the point-charge interaction due to charge penetration. We estimate the magnitude of the exchange charge contribution in the system Pr3 + - Cl- using a simple model based on calculating the change in the antiscreening of a point charge as it moves towards the lanthanide ion. A significant contribution is produced, which is not sensitive to the position of the exchange charge, showing that the conventional antiscreening factor )' '" cannot properly represent� the effect of anti screening on the ligand contributions to the nuclear quadrupole potential.

Uranyl oxide hydrate phases with heavy lanthanide ions: [Ln(UO2)2O3(OH)]·0.5H2O (Ln = Tb, Dy, Ho and Yb)

2018 ◽  
Vol 42 (15) ◽  
pp. 12386-12393 ◽  
Author(s):  
Yingjie Zhang ◽  
Robert Aughterson ◽  
Inna Karatchevtseva ◽  
Linggen Kong ◽  
Toan Trong Tran ◽  
...  
Keyword(s):  
Lanthanide Ions ◽  
Hydrothermal Conditions ◽  
Oxide Hydrate ◽  
Heavy Lanthanide

Four iso-structured uranyl oxide hydrate phases containing heavy lanthanide ions have been synthesized under hydrothermal conditions and characterized.

Chaos and secular cycles in a structurally simple model society

2012 ◽  
Author(s):  
Alexander Medvinsky ◽  
Alexey Rusakov
Keyword(s):  
Simple Model

A Simple Model of Changes in Lumbar Intervertebral Angles During Sagittal Torso Flexion

2011 ◽  
Author(s):  
Riley E. Splittstoesser ◽  
Greg G. Knapik ◽  
William S. Marras
Keyword(s):  
Simple Model

Discussion of the band structure effects on thermoemission as deduced from a simple model

1976 ◽  
Vol 37 (2) ◽  
pp. 149-158 ◽  
Author(s):  
A.K. Bhattacharjee ◽  
B. Caroli ◽  
D. Saint-James
Keyword(s):  
Simple Model ◽  
Band Structure

Description of a Simple Model for the Study of Bone Calcium Metabolism

1980 ◽  
Vol 19 (01) ◽  
pp. 11-15
Author(s):  
G. Roncari ◽  
L. Rapisardi ◽  
L. Conte ◽  
G. Pedroli
Keyword(s):  
Simple Model ◽  
Calcium Metabolism ◽  
Good Description ◽  
Radioactive Tracer ◽  
Normal Subjects ◽  
Bone Diseases ◽  
Compartment System ◽  
Bone Calcium ◽  
Finite Period ◽  
Kinetics Of

A simple model for the study of bone calcium metabolism is proposed. It describes the kinetics of a radioactive tracer in terms of an open single compartment system with an expanding volume for a finite period of time. In addition to the simplicity of the hypotheses introduced, the model is able to give a good description of the biological processes which regulate calcium kinetics. Moreover the functional parameters can be easily calculated, even just graphically. 15 normal subjects and 22 patients affected by various bone diseases were studied. The results were compared with those obtained by using the model proposed by Burkinshaw et al. and the method described by Reeve et al.

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