INTERFEROMETRIC MEASUREMENTS OF THE DIPOLE POLARIZABILITY-ALPHA OF MOLECULES BETWEEN 300-K AND 1100-K .2. A NEW METHOD FOR MEASURING THE DISPERSION OF THE POLARIZABILITY AND ITS APPLICATION TO AR, H-2, AND O-2

A new interferometric method is used to determine the temperature dependence of the dispersion of the polarizability a of gaseous argon, hydrogen and oxygen, respectively. Although only the small wavelength range between 543-51 nm and 632-99 nm is covered, the data obtained in the temperature range 300K < T < 1010K are useful to derive important molecular properties like effective oscillator strengths and excitation energies, dispersion energy constants, and polarizability derivatives. © 1990 Taylor & Francis Ltd.