HEAT CAPACITY OF PLUTONIUM DIOXIDE BELOW 320 K
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)
- Research Organization:
- Los Alamos Scientific Lab., N. Mex.
- DOE Contract Number:
- W-7405-ENG-36
- NSA Number:
- NSA-17-006049
- OSTI ID:
- 4749765
- Report Number(s):
- TID-15183; LADC-5260
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-63
- Country of Publication:
- United States
- Language:
- English
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