Vapor pressure and thermodynamics of actinide metals

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

DOI:https://doi.org/10.1021/bk-1980-0131.ch010· OSTI ID:6205013

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-enrgy functions, permitting calculation of heats, entropies and free energies from 298/sup 0/K to the highest temperatures of measurement. The vapor pressures and thermodyamics of vaporization of americium, curium, berkelium, and californium are compared in terms of electronic structure and bonding trends in the trans-plutonium elements. These resuslts 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.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6205013
• Journal Information: ACS Symp. Ser.; (United States), Journal Name: ACS Symp. Ser.; (United States) Vol. 131; ISSN ACSMC
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDES
AMERICIUM
BERKELIUM
CALIFORNIUM
CURIUM
ELEMENTS
ENERGY
ENTROPY
FLUID FLOW
FREE ENERGY
GAS FLOW
KNUDSEN FLOW
MASS SPECTROSCOPY
MEDIUM TEMPERATURE
METALS
PHYSICAL PROPERTIES
SPECTROSCOPY
THERMODYNAMIC PROPERTIES
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
VAPOR PRESSURE