THERMODYNAMICS OF THE ACTINIDES

Conference · Sun Apr 01 04:00:00 EST 1962

OSTI ID:4871682

Cunningham, Burris B.

Recent work on the thermodynamic properties of the transplutonium elements is presented and discussed in relation to trends in thermodynamic properties of the actinide series. Accurate values are given for room temperature lattice parameters of two crystallographic forms, (facecentred cubic) fcc and dhcp (double-hexagonal closepacked), of americium metal and for the coefficients of thermal expansion between 157 and 878 deg K (dhcp) and 295 to 633 deg K (fcc). The meiting point of the metal, and its magnetic susceptibility between 77 and 823 deg K are reported and the latter compared with theoretical values for the tripositive ion calculated from spectroscopic data. Similar data (crystallography, meiting point and magnetic susceptibility) are given for metallic curium. A value for the heat of formation of americium monoxide is reported in conjunction with crystallographic data on the monoxide and mononitride. A revision is made in the current value for the heat of formation of Am/O/sub 2/ and for the potential of the Am(III)-Am(IV) couple. The crystal structures and lattice parameters are reported for the trichloride, oxychloride and oxides of californium. (auth)

• Research Organization: LBNL (Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States))
• Sponsoring Organization: US AEC
• DOE Contract Number: W-7405-ENG-48
• NSA Number: NSA-17-006105
• OSTI ID: 4871682
• Report Number(s): UCRL-10176
• Country of Publication: United States
• Language: English

Related Subjects

ACTINIDES
AMERICIUM
AMERICIUM NITRIDES
AMERICIUM OXIDES
CALIFORNIUM CHLORIDES
CALIFORNIUM OXIDES
CHEMISTRY
CRYSTALS
CURIUM
EXPANSION
HEATING
LATTICES
MELTING POINTS
SPECTROSCOPY
SUSCEPTIBILITY
TEMPERATURE
THERMODYNAMICS