STF is the program for calculations of standard thermodynamic functions of the substances composed from diatomic molecules. The algorithm of the program is based on direct summation method as described in [G,Z]. The basis of the method consists in the calculation of rotational-vibrational energy levels from spectroscopic approximation - model obtained from perturbation theory and parametrized by spectroscopic constants. These energy levels are subsequently used for the evaluation of partition function and its derivatives.
Input data for the program are the spectroscopic constants in the form reported e.g. by well-known tables of Huber and Herzberg [H]. The code of the program was written in ANSI pascal language. The executable was generated by gpc compiler under linux. Please, contact O. Živný for details.
Acknowledgement:
The product contains the results of research work funded by Project 102/06/1337 of the Grant Agency of the Czech Republic.
