Vapor pressure and thermodynamics of actinide metals

Conference · Tue Jan 01 04:00:00 EST 1980 · ACS Symp. Ser.; (United States)

OSTI ID:6509419

Ward, J W ^[1]; Kleinschmidt, P D; Haire, R G; Brown, D

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1. Los Alamos Scientific Lab., NM

Precise vapor pressure measurements by target collection/mass spectrometric Knudsen effusion techniques were combined with crystal entropy estimates to produce self-consistent free-energy functions, permitting calculation of heats, entropies and free energies from 298 K to the highest temperatures of measurement. The vapor pressures and thermodynamics of vaporization of americium, curium, berkelium, and californium are compared in terms of electronic structure and bonding trends in the transplutonium elements. These results are contrasted with the behavior of the early actinides, with attention to energy states and possible effects of f-electron bonding. 9 figures, 4 tables.

• OSTI ID: 6509419
• Report Number(s): CONF-790917-P4
• Conference Information: Journal Name: ACS Symp. Ser.; (United States) Journal Volume: 131
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDES
ELECTRONIC STRUCTURE
ELEMENTS
ENTHALPY
ENTROPY
FORMATION HEAT
METALS
PHYSICAL PROPERTIES
REACTION HEAT
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
VAPOR PRESSURE