Thermodynamic properties of high temperature air in local thermodynamic equilibrium: II accurate analytical expression for electron molar fractions

A. D’Angola; G. Colonna; C. Gorse; M. Capitelli

doi:10.1140/epjd/e2011-20424-5

EPJ

Thermodynamic properties of high temperature air in local thermodynamic equilibrium: II accurate analytical expression for electron molar fractions

A. D’Angola¹^a, G. Colonna², C. Gorse²^,3 and M. Capitelli²^,3

¹ Dipartimento di Ingegneria e Fisica dell’Ambiente, Università della Basilicata, via dell’Ateneo Lucano, 10-85100 Potenza, Italy
² CNR-IMIP Bari, via Amendola 122/ D-70126 Bari, Italy
³ Dipartimento di Chimica, Università di Bari, via Orabona, 4- 70126 Bari, Italy

Received: 19 July 2011
Received in final form: 15 September 2011
Published online: 25 November 2011

Abstract

An extremely accurate analytical expression for electron molar fractions in LTE air plasma in the temperature range 50–20 000 K and in the pressure range 10^-3 ÷ 10³ bar is reported. Results have been obtained by using self-consistent cutoff and inserting Debye-Hückel corrections.