Bitte wählen Sie ihr Lieferland und ihre Kundengruppe
The universal NASA computer program CEC 71 commonly used for the calculation of chemical equilibria at high temperatures, based on JANAF data, was extended for external input of spectroscopic data of atoms and diatomic molecules for calculating their thermodynamic functions. This means an advantage for checking molecular values from the literature in their significance to computer results of calculated equilibrium concentrations. All input data can be altered arbitrarily. Since all thermodynamic functions of diatomic molecules can be solved analytically, there exists no upper temperature limit arising by the polynomial coefficient procedure of the original program. Some examples of calculation of internal partition functions, number densities, and emission coefficients of spectral lines and molecular bands under different conditions are given. (Author)