Title

Partition Functions and Thermodynamic Properties of Argon Plasma

Date

1963

Index Abstract

Coming Soon

Photo Quality

Not Needed

Report Number

AEDC TDR 63-146

Creator

Drellishak, K. S.

Knopp, C. F.

Cambel, Ali Bulent

Corporate Author

Northwestern University

Extent

238

Identifier

AD0414708

Distribution Classification

1

Contract

AF 40(600)-748

DoD Project

8951

DoD Task

895104

DTIC Record Exists

No

Distribution Change Authority Correspondence

None

Abstract

Using tabulated data for observed atomic energy levels plus estimated energies for levels which are predicted but not observed, the internal partition functions for the argon atom and the first four argon ions were calculated on an IBM 709 computer. The partition functions were terminated by application of the Debye cutoff criterion and a corresponding lowering of the ionization potential was included. Assuming a mixture of six perfect gases (electrons, argon atoms, and argon ions) the equilibrium composition, internal partition functions and thermodynamic properties were calculated and tabulated for five pressures (0.1, 0.5, 1.0, 2.0, and 5.0 atmospheres) at 100 K increments for a range of temperatures from 5000 to 35000 K. The tables and figures include internal partition functions, composition, density, entropy, internal energy, enthalpy, Gibbs and Helmholtz potentials, specific heats at constant pressure and volume, the effective gamma and equilibrium sound speed.

Report Availability

Full text available by request

Date Issued

1963-08

Publisher

Arnold Air Force Station, TN : Arnold Engineering Development Center, Air Force Systems Command, United States Air Force

Provenance

IIT

Type

report