JOURNAL of the Tunisian Chemical Society

serving the Research, the Education and the Industry

A comparative study of Rayleigh and Raman collisional diffusion from gaseous deuterium

Written by sctunisie no comments

We have studied the collisional Rayleigh and Raman intensity for densities between 18 and 130 Amagat at 293 K. The depolarisation ratios have been compared to those calculated with dipole-induced dipole model taking into account the anisotropy of molecules. The agreement between theory and experience is rather good for low densities.

H. Khalfallah, R. Boukhris, A. Gharbi

Pages 57-64

Short communication: Setting up A band E microwave and tests on KH2PO4 phase transition

Written by sctunisie no comments

A band E microwave measurement device has been set up and tested. The ferroelectric-paraelectric phase transition of a KH2PO4 monocristal has been observed at a temperature of 123 K for a frequency of 70 GHz. The extreme values of complex permittivity during the transition have been determined.

H. Zangar, M.S. Haouat

Pages 65-67

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