NUCLEAR CONTRIBUTION TO THE HEAT CAPACITY OF TERBIUM METAL

Journal Article · Sun Oct 01 04:00:00 EDT 1961 · Journal of Chemical Physics (U.S.)

DOI:https://doi.org/10.1063/1.1732033· OSTI ID:4830210

Heltemes, E C; Swenson, C A

The heat capacity of terbium metal was measured between 0.25 and 1.0 deg K. The high temperature data can be expressed as C = 28R x 10/sup -3/T/sup 2/ cal/ mole-deg. The data are compared with a Schottky formula for the heat capacity, assuming equal spacing between the nuclear hyperfine levels with an over-all spacing of beta = 0.45/ deg K, correspondlng to the high temperature expression above. The agreement is within experimental error except at the very lowest temperatures obtained. The effective field at the nucleus of the terbium atom can be calculated and is found to be H/sub eff/= 4 x 10/sup 6/ gauss. (auth)

• Research Organization: Ames Lab., Ames, Iowa
• NSA Number: NSA-16-001759
• OSTI ID: 4830210
• Report Number(s): IS-260; 0021-9606
• Journal Information: Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Journal Issue: 4 Vol. Vol: 35; ISSN JCPSA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ATOMIC MODELS
ATOMS
CHEMISTRY
ENERGY LEVELS
EQUATIONS
ERRORS
FIELD THEORY
HIGH TEMPERATURE
HYPERFINE STRUCTURE
INTERACTIONS
LEVELS
LOW TEMPERATURE
MAGNETIC FIELDS
MEASURED VALUES
MOLECULES
NUCLEAR MODELS
NUCLEI
NUMERICALS
SCHOTTKY EFFECT
SPECIFIC HEAT
TERBIUM
TESTING