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Title HEAT CAPACITY OF PLUTONIUM DIOXIDE BELOW 320 K
Creator/Author Sandenaw, T.A.
Publication Date1961 Jan 01
OSTI IdentifierOSTI ID: 4749765
Report Number(s)TID-15183;LADC-5260; LADC-5260
Resource TypeTechnical Report
Research OrgLos Alamos Scientific Lab., N. Mex.
SubjectCHEMISTRY; AIR; COOLING; EQUATIONS; HELIUM; LIQUIDS; LOW TEMPERATURE; NEPTUNIUM OXIDES; PLUTONIUM OXIDES; SPECIFIC HEAT; TABLES; TEMPERATURE; THERMODYNAMICS; THORIUM OXIDES; URANIUM DIOXIDE
Description/Abstract The low temperature heat capacity behavior of PuO/sub 2/ was found to be anomalous and irreproducible, changing slightly after every one of 7 liquid He coolings. Data obtained from a second series of liquid He coolings, made after refiring 3 or 4 original PuO/sub 2/ wafers in air, were consistent with the last run of the first series. The final low temperature heat capacity vs temperature curve was more like that reported for ThO/sup 2/ than it was for similar curves reported for UO/sup 2/ and NpO/sub 2/. Least-squares equations relating heat capacity and temperature are given for 3 temperature regions. Calculated values of the energy density of states and theta /sub D/ are shown and values of entropy and enthalpy are listed for several temperatures. (auth)
LanguageEnglish
FormatPages: 25
System Entry Date2001 Jun 03

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