A. R. Milosavljević

Physics - apparatus UGRA

Main Pages 1. Main Page 2. Curriculum Vitae 3. Publications 4. More Physics (under construction) Apparatus UGRA Critical minima Electron optics Programming Thesis Conferences (+ pictures) Vražogrnac home page (where I am from) Main page Private pages

The apparatus UGRA is placed in the Laboratory for Atomic Collision Processes, Institute of Physics Zemun. It consists of a crossed beam spectrometer with an electron gun, electron energy analyzer and channel electron multiplier as a detector. The effusive atomic beam is formed using a stainless steel, nonmagnetic needle placed perpendicularly to the incident electron beam.  The electron gun with a hairpin thermoelectron source is used to produce a well collimated electron beam. This gun can produce up to 1 mA of incident beam current in the energy range from 20 eV to 500 eV. The analyzing system consists of simple four-element electron lens followed by double cylindrical mirror analyzer (DCMA). The double mu-metal shield reduces the Earth and other magnetic fields to less than 2x10^-7 T. Background pressure is approximately 3x10^-7 mbar. People Previous: Dr. Iztok Cadez - head and developer of the apparatus Dr. Stojan Madzunkov Dr. Duska Popovic Present: Dr. Aleksandar Milosavljevic Jelena Maljkovic – PhD student Dr. Bratislav Marinkovic - head of the Laboratory Dr. Dragutin Sevic