Accession Number : AD0606163

Title :   TABLES OF IDEAL GAS THERMODYNAMIC FUNCTIONS FOR 73 ATOMS AND THEIR FIRST AND SECOND IONS TO 10,000K,

Corporate Author : NATIONAL BUREAU OF STANDARDS WASHINGTON D C

Personal Author(s) : Hilsenrath,Joseph ; Messina,Carla G. ; Evans,William H.

Report Date : AUG 1964

Pagination or Media Count : 452

Abstract : Tables are presented of five thermodynamic properties for the electron, for 73 elements, H through La and Hf through Ac (with the exception of At and Fr) and, in most cases, for their first and second ions. The tables are given at 100 degree intervals starting at 100K for the atoms and at 100 or 1000 degree for the ions and extending to 10,000K. They were computed for the atoms and atomic ions considered as ideal monatomic gases by direct summation over the available energy levels. The summation over energy levels was made from the ground state up to the principal quantum number 5. Where the quantum number, n, for the ground state exceeds 5, summations were made only over levels having the same n as the ground state. The sensitivity of the thermal functions to the inclusion of higher energy states in the partition function is discussed briefly, illustrated graphically for the specific heats, and tabulated for the Gibbs free energy function. (Author)

Descriptors :   (*THERMODYNAMICS, TABLES(DATA)), (*ATOMIC PROPERTIES, THERMODYNAMICS), IONS, ELECTRONS, GASES, ATOMIC ENERGY LEVELS, QUANTUM STATISTICS, SPECIFIC HEAT, ENTROPY

Distribution Statement : APPROVED FOR PUBLIC RELEASE