A novel method of computer based interferogram evaluation
Résumé
Paper presents a new alternative procedure for evaluation of interference patterns recording the light beam deflection in cylindrically symmetrical phase objects. Described method is applicable for evaluation of complicated interference patterns containing heavily distorted, double or closed inter-ference fringes, too. Developed algorithm was applied to a complex interference pattern taken in deu-terium burning pinch discharge and electron density values in the discharge channel were obtained. Paper also discusses influence of the phase shift deformation outside the region under study on the accuracy of results and on electron density estimation inside the shock wave of the pinch. The calcula-tion of electron temperature in the discharge channel was performed providing kinetic and magnetic pressures equilibrium. All calculations had been performed in the MATLAB computing environment.