Document Detail


Thermal expansion and transformation behavior of cerium and plutonium alloys: an application of the Aptekar-Ponyatovsky regular solution model.
MedLine Citation:
PMID:  21860075     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In this paper we apply the Aptekar-Ponyatovsky (AP) regular solution thermodynamic model to the analysis of experimental data for the coefficient of thermal expansion (CTE) and determine the AP model parameters for unalloyed cerium metal, Ce-Th-La alloys, and Pu-Ga alloys. We find that the high temperature CTE of cerium metal follows the predictions of the AP model based on low temperature, high pressure data. For Ce-Th-La alloys we use the AP parameters to track the suppression of the first-order γ-α cerium transition. We show the AP model accounts for the negative CTE observed for Pu-Ga alloys and is equivalent to an earlier invar model. Finally, we apply the AP parameters obtained for Pu-Ga alloys to rationalize the observed δ-α transformation pressures of these alloys. We show that the anomalous values of the Grüneisen and Grüneisen-Anderson parameters are important features of the thermal properties of plutonium. A strong analogy between the properties of plutonium and cerium is confirmed.
Authors:
A C Lawson; J C Lashley
Related Documents :
22278705 - Fish welfare assurance system: initial steps to set up an effective tool to safeguard a...
22003595 - Deformable registration of bronchoscopic video sequences to ct volumes with guaranteed ...
22517995 - Three-dimensional segmentation of the upper airway using cone beam ct: a systematic rev...
22514655 - Systematic analysis of stability patterns in plant primary metabolism.
25019205 - Controls on the entrainment of juvenile chinook salmon (oncorhynchus tshawytscha) into ...
24165435 - Moving beyond methods: the need for a diverse programme in climate change research.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-8-22
Journal Detail:
Title:  Journal of physics. Condensed matter : an Institute of Physics journal     Volume:  23     ISSN:  1361-648X     ISO Abbreviation:  -     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-8-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101165248     Medline TA:  J Phys Condens Matter     Country:  -    
Other Details:
Languages:  ENG     Pagination:  365803     Citation Subset:  -    
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  High pressure investigations of Na(0.025)WO(3): x-ray diffraction and Raman spectroscopy studies.
Next Document:  Low-dose CT reconstruction via edge-preserving total variation regularization.