• HABIBI MORTEZA

      Articles written in Pramana – Journal of Physics

    • Argon ion beam interaction on polyethylene terephthalate surface by a 4 kJ plasma focus device

      Habibi Morteza Alavi M H S

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      Polyethylene terephthalate (PET) has a wide variety of applications ranging from making regular bottles to biosensors. However, for many of these applications, surface treatment is needed to improve its surface characteristics such as adhesion to other materials. In this study, we focussed on treating PET foils by dense Ar pulsed plasma produced by a 4.5 kJ Mather-type plasmafocus device (20 kV, 40 $\mu$f, 115 nH) to examine its ability to make the PET surface hydrophilic. The most common method to examine this characteristic is measuring the water contact angle on a polymer surface. The results show that while the energy and density of plasma in our device are higher compared to other devices, as the exposure time is very low, the device can enhance thewettability of PET film surfaces.

    • Experimental study of soft X-ray intensity with different anode tips in Amirkabir plasma focus device

      HABIBI MORTEZA MAHTAB MAHSA

      More Details Abstract Fulltext PDF

      To study the effect of different anode tip geometries on the intensity of soft X-rays emitted from a 4 kJ plasma focus device (PFD), we considered five different anode tips which were cylindrical-flat, cylindricalhollow, spherical-convex, cone-flat and cone-hollow tips. BPX-65 PIN diodes covered by four different filters are used to register the intensity of soft X-rays. The use of cone-flat anode tip has augmented the emitted X-ray three times compared to the conventional cylindrical-flat anode.

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