Preparation of /sup 147/Pm metal and the determination of the melting point and phase transformation temperatures

Preparation of /sup 147/Pm metal and the determination of the melting point and phase transformation temperatures [electronic resource]

The promethium metal used in the determination of the melting point and phase transformation temperatures was prepared by reduction of promethium oxide with thorium metal at 1600/sup 0/C and distilling the promethium metal into a quartz dome. The melting point and phase transformation temperatures o...

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Bibliographic Details
Online Access: Online Access (via OSTI)
Corporate Author: Oak Ridge National Laboratory (Researcher)
Format: Government Document Electronic eBook
Language:English
Published: Oak Ridge, Tenn. : Oak Ridge, Tenn. : Oak Ridge National Laboratory. ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, 1976.
Subjects:
Promethium.
Chemical Preparation.
Melting Points.
Phase Transformations.
Distillation.
Promethium 147.
Promethium Oxides.
Quartz.
Reduction.
Thorium.
Very High Temperature.
Actinides.
Beta Decay Radioisotopes.
Beta-Minus Decay Radioisotopes.
Chalcogenides.
Chemical Reactions.
Elements.
Intermediate Mass Nuclei.
Isotopes.
Metals.
Nuclei.
Odd-Even Nuclei.
Oxides.
Oxygen Compounds.
Physical Properties.
Promethium Compounds.
Promethium Isotopes.
Radioisotopes.
Rare Earth Compounds.
Rare Earth Isotopes.
Rare Earth Nuclei.
Rare Earths.
Separation Processes.
Silicon Compounds.
Silicon Oxides.
Synthesis.
Thermodynamic Properties.
Transition Temperature.
Years Living Radioisotopes.
Materials Science.
Radiation Chemistry, Radiochemistry, And Nuclear Chemistry.
Description
Summary:The promethium metal used in the determination of the melting point and phase transformation temperatures was prepared by reduction of promethium oxide with thorium metal at 1600/sup 0/C and distilling the promethium metal into a quartz dome. The melting point and phase transformation temperatures of promethium metal were found to be 1042 +- 5/sup 0/C and 890 +- 5/sup 0/C, respectively. The ratio for the heat of the high-temperature transformation to the heat of fusion was determined to be 0.415.
Item Description:Published through SciTech Connect.
07/01/1976.
"ornl/tm-4975"
Angelini, P.; Adair, H.L.
Physical Description:Pages: 28 : digital, PDF file.

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